Browse All 244+ Free Tools

Keep the document as PDF: merge, split, compress, rotate, watermark, extract. If stakeholders expect a .pdf attachment, solve it here before you rasterize pages or dump text elsewhere.

• Add Page Numbers to PDFFree tool to add page numbers to PDF — choose position, alignment, font size, and starting number. Perfect for reports, theses, and legal documents. Download instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Add Watermark to PDFFree PDF watermark tool — add custom text watermarks like DRAFT, CONFIDENTIAL, or your company name to PDF pages. Choose position, opacity, font, and angle. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Compress PDFFree browser-based PDF compressor — pick Smallest size, Balanced, or Best quality presets and reduce PDF file size without a fixed byte target. Up to 50 MB per file. Ideal for email, cloud storage, and general uploads. No server upload, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Compress PDF to 1MBAutomatically compress any PDF to under 1MB without manually tuning quality settings. Built for government portals, job applications, and upload forms with a hard 1MB file-size cap. Browser-based — your file stays on your device.
• Edit PDF MetadataFree PDF metadata editor — change the title, author, subject, and keywords embedded in any PDF. Clean metadata for professional documents and proper attribution. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Extract PDF Pages — Pull Out Any Page RangeExtract specific PDF pages or ranges (1, 3-7, 10) into a new file. Thumbnail picker, reorder pages. Browser-only—no upload, no signup.
• Flatten PDFLock fillable PDF forms or bake in comments and highlights—two modes, 50 MB max, runs in your browser. No upload, no signup. Keep a backup; flattening is irreversible.
• Image to PDFFree image to PDF converter—combine JPG, PNG, WebP into one PDF, reorder pages, A4/Letter layout. Runs locally in your browser; no upload or signup.
• Merge PDFFree PDF merger — combine multiple PDF files into one document. Drag to reorder files, preview pages, and download the merged PDF instantly. No signup, fully browser-based. Runs locally in your browser when supported—no upload required for normal use.
• PDF to GrayscaleConvert PDF to black & white or grayscale online—page range, DPI presets, 1-bit mode, before/after preview. Runs in your browser; no upload, no signup.
• PDF to Image Converter — JPG & PNG ExportConvert PDF pages to JPG or PNG at 72–300 DPI. No upload—PDF.js runs locally in your browser. Free, no signup.
• Remove PDF PagesFree PDF page removal tool — select any page numbers to delete from a PDF and download a clean document instantly. Browser-based, your file stays private. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Reorder PDF PagesFree PDF page reorder tool — drag and drop PDF pages into any order, preview thumbnails, and download the resequenced PDF instantly. Browser-based, your file stays private. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Rotate PDFFree PDF page rotator — rotate one or all pages in a PDF to portrait or landscape at 90°, 180°, or 270°. Browser-based — your PDF stays on your device. No signup required.
• Split PDFFree PDF splitter — split any PDF by page range, extract individual pages, or divide into equal parts. Download separate files instantly. No signup, fully browser-based. Runs locally in your browser when supported—no upload required for normal use.

Pixels and vectors live here: compress, resize, crop, convert formats, strip backgrounds, and edit SVG for icons. If the file is a photo or illustration—not a PDF page or a prose draft—this is the right aisle.

• Base64 to Image — Decode Base64 & Data URLs to ImagesPaste Base64 or data:image URLs—live preview, download PNG/JPG/WebP/GIF/SVG. No upload: decoding stays on your device in the browser. Free, no signup.
• Compress Image to 100KBCompress or resize JPG, PNG, and WebP to under 100KB for job portals, government forms, and ID uploads. Runs locally in your browser—nothing uploaded. Batch ZIP download.
• Compress Image to 200KBCompress JPG, PNG, or WebP to under 200KB for blogs, CMS, and listings. No upload—runs locally in your browser. Free, instant download.
• Compress Image to 50KBCompress JPG or PNG images to under 50KB for government portals, passport photo uploads, visa applications, and strict ID submission requirements. No upload — runs in your browser.
• HEIC to JPG ConverterFree HEIC to JPG converter — convert iPhone and iPad HEIC photos to JPEG format for sharing, uploading, and compatibility with Windows, Android, and web. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Image Compressor — Compress JPG, PNG & WebP OnlineCompress JPG, PNG & WebP in your browser—up to 80% smaller, batch 25 files, 50/100/200 KB presets. Files stay on your device. No signup.
• Image ConverterFree image converter — convert JPG, PNG, WebP, HEIC, BMP, and TIFF to any format in your browser. Batch conversion supported. Files never sent to a server. No signup required.
• Image CropperFree online image cropper — drag to select crop area, lock to common aspect ratios (1:1, 4:3, 16:9), and download the cropped image as JPG, PNG, or WebP. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Image ResizerFree image resizer—scale by pixels or %, lock aspect ratio, export JPG/PNG/WebP. Runs locally in your browser; no upload or signup.
• Image RotatorFree image rotator — rotate JPG, PNG, or WebP 90°, 180°, or 270° and flip horizontally or vertically. Fix EXIF orientation issues instantly. Files stay in your browser. No signup.
• Image Size Reducer — Compress Images to an Exact KB or MB TargetCompress up to 20 images to an exact KB or MB target—100 KB, 200 KB, 1 MB, and more. JPG, PNG, WebP. ZIP export. No upload; 100% in your browser.
• Image to Base64 — PNG, JPG, WebP & SVG Data URLConvert PNG, JPG, JPEG, WebP, GIF, or SVG to Base64 or data URLs in your browser. Copy or download for HTML, CSS, and APIs. No upload.
• Image to SVG ConverterFree browser-based image-to-SVG converter — trace PNG or JPG images to scalable vector format. Best for flat-colour icons, logos, and simple illustrations where scalability matters. No server upload, no signup. Runs locally in your browser when supported—no upload required for normal use.
• JPG to PNG Converter — Split Preview, Batch ZIPJPG/PNG split slider, transparency checkerboard, artefact magnifier, batch ZIP + JSON report—100% browser-local, no upload.
• PNG to JPGConvert PNG to JPG in your browser—split PNG/JPG preview, transparency fill, quality 50–100%, batch ZIP with report. No upload, no signup.
• Remove Background from Image — Free OnlineFree AI background remover—transparent PNG in seconds. No upload: runs in your browser locally. JPG, PNG, WebP. No signup.
• SVG Color EditorFree SVG color editor — click any shape to change fill or stroke color with a live preview. Export the recolored SVG instantly. No server upload, no signup required. Runs locally in your browser when supported—no upload required for normal use.
• SVG Path Editor — Live Preview & Path DebuggerPaste SVG path d data to preview, inspect Bézier points, and export clean SVG. No upload—runs locally in your browser. Free, no signup.
• SVG to JPG ConverterFree SVG to JPG converter — upload any SVG and export it as JPEG with custom quality settings and background color. Ideal for icons, illustrations, and sharing. No signup. Runs locally in your browser when supported—no upload required for normal use.
• SVG to PNG ConverterFree SVG to PNG converter — export SVG as PNG with custom dimensions and pixel density. Perfect for icons, logos, and web graphics. Fully browser-based, no signup required. Runs locally in your browser when supported—no upload required for normal use.
• SVG Viewer — Open, Inspect & Preview SVG Files OnlineOpen SVG files in your browser—zoom, pan, metadata, sanitized preview via DOMPurify. No upload: files stay on your device. Free, no signup.
• WebP to JPGFree WebP to JPG converter — convert WebP images to JPEG instantly for universal compatibility with older browsers, devices, and platforms. No quality loss option. No signup. Runs locally in your browser when supported—no upload required for normal use.

Focused formulas—health, money, grades, tips, science—each on its own page. Treat results as helpful estimates; use professional advice when health, tax, or legal outcomes really matter.

• AC Tonnage CalculatorFree AC tonnage calculator: room size and climate → central air conditioner tons from cooling BTU load. Runs locally in your browser.
• Age Difference CalculatorAge gap or date duration in years, months, and days. Two modes, timeline, presets, copy & share—free, runs locally in your browser.
• Average CalculatorFree average calculator: arithmetic mean, sum, count, min, max, and range from pasted lists—grades, budgets, or datasets. Private, instant, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Baking Conversion CalculatorFree baking conversion: cups and tablespoons to grams for flour, sugar, butter, and more. Ingredient-specific densities. Runs locally in your browser.
• Bi-Weekly Payroll Calculator — Estimate Your Two-Week PaycheckEstimate bi-weekly gross and net pay from hourly rate, hours, overtime 1.5×/2×, and tax %. No upload—runs in your browser. Planning only, not official withholding.
• BMI CalculatorCalculate BMI from height and weight using metric or imperial units. See BMI category ranges and use it as a quick screening estimate. Runs locally in your browser when supported—no upload required for normal use.
• Body Fat Calculator — US Navy & BMI MethodsEstimate body fat % with US Navy waist/neck/hip measurements or BMI method. Runs locally in your browser—never uploaded. Free for men and women.
• Break-Even CalculatorFree break-even calculator — find break-even units and revenue from fixed costs, price, and variable cost. Includes contribution margin and targets. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Breaker Sizing CalculatorFree breaker sizing calculator: load watts and voltage → standard breaker size and minimum copper wire. Continuous-load factor included. Runs locally in your browser.
• Brine CalculatorFree brine calculator: water gallons and salt % → grams and cups of salt — 1 gallon at 5% ≈ 189 g salt. Runs locally in your browser.
• BTU Room CalculatorFree BTU room calculator: floor area, ceiling height, climate zone → cooling BTU/hr, tons, and suggested CFM. Runs locally in your browser.
• Cake Pan ConverterFree cake pan converter: rectangular and round pans → area ratio and batter scale factor. Swap 9×13 for 8×8 or round tins. Runs locally in your browser.
• Calorie CalculatorEstimate daily calories using the Mifflin-St Jeor BMR formula and TDEE activity multipliers for maintenance, weight loss, or weight gain. Runs locally in your browser when supported—no upload required for normal use.
• Carpet CalculatorFree carpet calculator: room size + roll width → square yards and linear feet with seaming waste. Bedroom and living presets, 12 ft roll width. Runs locally in your browser.
• Charity CalculatorFree charity calculator for donation budgeting: percent-of-income or fixed gifts, formula breakdown, scenario table, gross/net basis. Browser-local — not tax advice.
• Circuit Load CalculatorFree circuit load calculator: sum appliance watts on one breaker → amps and load percentage. 80% guidance for continuous loads. Runs locally in your browser.
• Combination Calculator — nCr (n Choose r)Calculate combinations nCr = n!/(r!(n−r)!) for unordered selections. No upload: runs locally in your browser. Free, instant nCr results.
• Compost CalculatorFree compost calculator: bed or area and depth → cubic yards, cubic feet, liters, and bag counts for amendments and top-dressing. Depth presets and optional buffer. Runs locally in your browser.
• Concrete CalculatorFree concrete calculator: slab footprint + depth → cubic yards and bag counts. Patio, sidewalk, and post-hole presets with ready-mix guide. Runs locally in your browser.
• Cost of Living CalculatorFree cost of living calculator — compare two cities and estimate equivalent salary using cost indices (and optional category weights). Runs locally. No signup.
• Daily Work Hours CalculatorCalculate net work hours for one shift from clock-in, clock-out, and breaks. Decimal output for timesheets. No upload—runs locally in your browser.
• Discount Calculator — Sale Price, Savings & Reverse PriceCalculate sale price and savings from percent or fixed discounts. Reverse original price too. No upload—runs locally in your browser. Free.
• Drain Slope CalculatorFree drain slope calculator: horizontal run and slope in/ft → total drop and percent grade with IPC minimum check. Runs locally in your browser.
• Drywall CalculatorFree drywall calculator: room size + wall height → 4×8 sheet count with door/window deductions and waste buffer. Bedroom and basement presets. Runs locally in your browser.
• Duct CFM CalculatorFree duct CFM calculator: AC tonnage or cooling BTU → required supply airflow using 400 CFM per ton. Runs locally in your browser.
• Duct Size CalculatorFree duct size calculator: CFM and velocity → round duct diameter with next standard size. Runs locally in your browser.
• Electricity Cost CalculatorFree electricity cost calculator: kWh = (watts ÷ 1000) × hours; cost = kWh × your $/kWh rate—stack appliances, peak/off-peak. Runs in your browser, no signup.
• Exponent CalculatorCalculate powers like a^b, negative exponents, and fractional exponents with clear results and quick examples like 2^3 = 8. Runs locally in your browser when supported—no upload required for normal use.
• Factorial Calculator — n! (n Factorial)Calculate factorial n! for 0 ≤ n ≤ 500 with exact big-integer results. No upload—runs locally in your browser. Free, instant n! for combinatorics.
• Fascia CalculatorFree fascia calculator: eave run → linear feet and 12 ft board counts with cut waste buffer. Runs locally in your browser.
• Fence CalculatorFree fence calculator: run length or yard perimeter → panels and posts with waste buffer. Wood and vinyl 8 ft presets. Runs locally in your browser.
• Flooring CalculatorFree flooring calculator: room size + sq ft per box → cartons to buy with waste buffer. LVP and laminate presets, 10–20% waste, imperial and metric. Runs locally in your browser.
• Fraction CalculatorFree fraction calculator with steps: add, subtract, multiply, divide, simplify, and show mixed/decimal forms instantly. Fast, private, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Freelance Rate CalculatorFree freelance rate calculator — turn target income, business expenses, tax, and billable hours into a minimum hourly rate, with optional profit buffer and project price. No signup. Runs locally in your browser when supported—no upload required for normal use.
• French Drain CalculatorFree French drain calculator: trench length, width, and fill depth → cubic yards and bags of drain rock. Foundation and downspout presets, 12–24 in depth guide, order buffer. Imperial or metric. Runs locally in your browser.
• Fuel Cost CalculatorFree fuel cost calculator: trip fuel = distance ÷ MPG (or km × L/100km ÷ 100) × price per gallon or liter—round trip & buffer optional. Private, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Furnace BTU CalculatorFree furnace BTU calculator: room or whole-home sq ft → recommended heating BTU/hr output by climate zone. Runs locally in your browser.
• Garden Soil CalculatorFree garden soil calculator: bed fill volume for blended soil mixes — cubic yards, cubic feet, liters, and bag counts. Imperial or metric. Runs locally in your browser.
• GCF CalculatorFind the greatest common factor of two or more integers using the Euclidean algorithm and factor-method explanations. Runs locally in your browser when supported—no upload required for normal use.
• Gold Zakat CalculatorFree gold zakat calculator: weight, karat, 24k price—85g nisab & 2.5% if above threshold. Runs locally in your browser; never uploaded. Estimate only.
• GPA Calculator — Grade Points & CreditsCalculate weighted GPA from letter grades and credit hours. Standard 4.0 formula, instant results. No upload—runs locally in your browser. Free, no signup.
• Grass Seed CalculatorFree grass seed calculator: lawn area and seeding rate → pounds or kilograms of seed with optional buffer. New lawn and overseed presets. Runs locally in your browser.
• Gravel CalculatorFree gravel calculator: path or driveway area and depth → cubic yards, cubic feet, and bag estimates with compaction buffer. Runs locally in your browser.
• Gravel Depth CalculatorFree gravel depth calculator: path or pad footprint and layer depth → cubic yards, bags, and coverage tables. Walkway, driveway, and paver base presets with compaction buffer. Imperial or metric. Runs locally in your browser.
• Gutter CalculatorFree gutter calculator: eave length or perimeter → linear feet and 10 ft section counts with overlap buffer. Runs locally in your browser.
• Heart Rate Zone CalculatorFree heart rate zone calculator: Karvonen or 220−age, five zones in bpm—fat burn, cardio, threshold, HIIT. Runs locally; never uploaded.
• Heat Pump Size CalculatorFree heat pump size calculator: room dimensions → tons with cooling and heating BTU/hr estimates. Runs locally in your browser.
• Hot Water Flow CalculatorFree hot water flow calculator: simultaneous fixtures → peak GPM and tankless BTU/hr at your temperature rise. Runs locally in your browser.
• Hourly Pay Calculator — Gross Pay, Overtime & Pay PeriodsConvert hourly wage to daily, weekly, monthly & yearly gross pay. Overtime 1.5×, job compare, tax estimate. No upload—runs locally in your browser. Free.
• Ideal Weight CalculatorEstimate ideal weight using Devine, Robinson, Miller, and Hamwi formulas and compare the output range in one place. Runs locally in your browser when supported—no upload required for normal use.
• Insulation CalculatorFree insulation calculator: area + sq ft per batt bag → bags to buy with waste buffer. Attic, wall, and crawl presets with opening deductions. Runs locally in your browser.
• Landscape Fabric CalculatorFree landscape fabric calculator: bed area and sq ft per roll → rolls to buy with overlap buffer. Shrub border and path edge presets. Imperial or metric. Runs locally in your browser.
• Landscape Rock CalculatorFree landscape rock calculator: bed size or tree ring and depth → cubic yards, ton estimates, bags, and bulk vs bag guidance. River rock presets, round bed mode, order buffer. Runs locally in your browser.
• LCM CalculatorCalculate the least common multiple of two or more integers with formula-based steps and prime factorization guidance. Runs locally in your browser when supported—no upload required for normal use.
• Lean Body Mass Calculator — LBM From Body Fat or HeightCalculate lean body mass from body fat % or Boer, James, and Hume formulas. Runs locally in your browser—never uploaded. Free LBM & BMR estimates.
• Logarithm Calculator — log₁₀, ln & Custom BaseFree logarithm calculator: log base 10, natural log (ln), log₂, or any custom base b for positive x. Runs in your browser—never uploaded.
• Macro CalculatorEstimate daily macros from BMR and TDEE, then split calories into protein, carbs, and fats for fat loss, maintenance, or muscle gain. Runs locally in your browser when supported—no upload required for normal use.
• Meal Cost Calculator — Recipe & Cost per ServingFree meal cost calculator: unit-labeled ingredients, waste %, weekly meal plan, food-cost target & CSV export. Runs locally—never uploaded.
• Mean Median Mode CalculatorCompare mean, median, and mode from one dataset. See how each central-tendency measure describes your numbers when outliers or skew matter. Runs locally in your browser when supported—no upload required for normal use.
• Meat Thaw Time CalculatorFree meat thaw calculator: frozen weight → refrigerator or cold-water thaw hours — 12 lb turkey ≈ 57.6 hours (~2.4 days) in the fridge. Runs locally in your browser.
• Metal Roofing CalculatorFree metal roofing calculator: roof area and sq ft per panel → panel counts with waste buffer. Standing seam presets. Runs locally in your browser.
• Monthly Budget CalculatorFree monthly budget calculator — track income and categorized expenses to see surplus/deficit and 50/30/20 splits. Plan savings targets. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Monthly Work Hours Calculator — Sum & Estimate Month-End HoursFree monthly work hours calculator: sum decimal weekly totals or estimate 8×5×4.33 h. Month-end hours for timesheets—runs locally, never uploaded.
• Mulch CalculatorFree mulch calculator: bed size or square footage and depth → cubic yards, cubic feet, liters, and bag counts. Depth presets, coverage tables, optional buffer. Imperial or metric. Runs locally in your browser.
• Online CalculatorFast keyboard-friendly calculator for +, −, ×, ÷, %, and parentheses. No upload—runs locally in your browser. Free, instant results.
• Oven Temperature Converter CalculatorFree oven temperature converter: Fahrenheit, Celsius, and UK gas mark for baking — 350°F → 177°C, Gas 4. Runs locally in your browser.
• Overtime Pay Calculator — 1.5×, Double-Time & Gross PayCalculate overtime pay at 1.5× or 2×: enter hourly rate, regular hours, and OT hours for gross weekly pay. Runs locally in your browser—never uploaded. Free.
• Ovulation Calculator — Fertile Window & Ovulation CalendarEstimate ovulation day and fertile window from last period date and cycle length. Calendar + 3-cycle forecast. Runs locally in your browser—never uploaded. Free.
• Paint CalculatorFree paint calculator: enter wall area, coverage from your can, and coats → gallons or liters to buy. Room presets, door/window deductions, waste buffer, can round-up. Runs locally in your browser.
• Paver CalculatorFree paver calculator: patio area, paver size, and cut waste → paver count, boxes, and pallets. Backyard patio presets, ICPI waste guidance, imperial or metric. Runs locally in your browser.
• Percentage CalculatorWhat is 20% of 500? Percent increase, decrease, difference, reverse %, markup & margin—runs locally in your browser, no upload. Copy results or share a link.
• Permutation Calculator — nPr (Ordered Arrangements)Calculate permutations nPr = n!/(n−r)! when order matters—5P2, 10P3, 26P3 & more. Runs locally in your browser, no upload. Exact results up to n=500.
• PEX Pipe CalculatorFree PEX pipe calculator: run length or perimeter → linear feet and coil counts with fittings buffer. Runs locally in your browser.
• Pipe Sizing CalculatorFree pipe sizing calculator: fixture counts → WSFU and DFU totals with supply and drain pipe size recommendations. Runs locally in your browser.
• Pipe Volume CalculatorFree pipe volume calculator: inside diameter and length → gallons, liters, and water weight in the pipe. Imperial and metric. Runs locally in your browser.
• Pizza Dough CalculatorFree pizza dough calculator: split total dough into equal balls or compute from flour and hydration — 1000 g ÷ 4 = 250 g per ball. Runs locally in your browser.
• Plant Spacing CalculatorFree plant spacing calculator: bed size and row/plant spacing → total plants for grid layouts. Tomato, lettuce, and square-foot presets. Runs locally in your browser.
• Pregnancy Due Date CalculatorEstimate pregnancy due date from the first day of your last menstrual period (LMP) with a simple 40-week calculation. Runs locally in your browser when supported—no upload required for normal use.
• Prime Number Calculator — Factor Tree, Sieve & nth PrimeSix modes: check, factor tree, list, range, nth, random. Sieve animation, Miller–Rabin to 10¹², export TXT/CSV—runs locally.
• Probability Calculator — Independent Events & ComplementsCalculate P(A), complements, P(A and B), and P(A or B) for independent events. No upload—runs locally in your browser. Free, instant.
• Profit Margin CalculatorFree profit margin calculator — compute profit, margin %, and markup from cost and selling price, or find price for a target margin. Runs locally. No signup.
• Protein Intake CalculatorEstimate daily protein requirements based on body weight, activity level, and fitness goal. Results in grams per day and per meal. Runs locally in your browser when supported—no upload required for normal use.
• Raised Bed Soil CalculatorFree raised bed soil calculator with mix splits (60/40, Mel's Mix), round & rectangular beds, bulk vs bag guidance, weight estimates, cubic yards, and bag counts. Runs locally in your browser.
• Ratio CalculatorFree ratio calculator & ratio solver — simplify ratios (12:18 → 2:3), compare equivalence, simplify aspect ratios (1920×1080 → 16:9). Runs locally; data stays on your device.
• Recipe Scaler CalculatorFree recipe scaler: original and new servings → scale factor and ingredient amounts. Double, halve, or custom serving math. Runs locally in your browser.
• Retaining Wall Block CalculatorFree retaining wall block calculator: wall length, height, and block size → blocks to order, courses per row, and cut buffer. Garden terrace presets for 16×8 in blocks. Imperial or metric. Runs locally in your browser.
• Rice Ratio CalculatorFree rice ratio calculator: cups of rice and water-to-rice ratio → cups of water to add. White, jasmine, brown, and basmati presets. Runs locally in your browser.
• Roof Area CalculatorFree roof area calculator: building footprint and pitch → total roof surface sq ft. Rectangle or area input with slope multiplier. Runs locally in your browser.
• Roof Pitch CalculatorFree roof pitch calculator: rise and run → pitch ratio (X/12), angle in degrees, and footprint area multiplier. Residential pitch presets. Runs locally in your browser.
• Roofing Material CalculatorFree roofing material calculator: roof area → shingle bundles and underlayment rolls with waste buffer. Full takeoff presets. Runs locally in your browser.
• Roofing Shingle CalculatorFree roofing shingle calculator: roof area and sq ft per bundle → bundles to order with waste buffer. Roof size presets, 33.3 sq ft bundle default. Runs locally in your browser.
• Running Pace Calculator — Pace, Time & Race SplitsFree running pace calculator: pace, finish time, or distance from any two values. Min/km & min/mile, race presets, splits—runs locally in your browser, never uploaded.
• Salary After Tax CalculatorEstimate take-home pay from salary using simplified tax brackets and standard deductions (US/UK/CA/AU + custom). Shows effective and marginal rates. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Salary to Hourly CalculatorConvert salary to hourly, daily, weekly, and monthly pay using the 2,080-hour baseline, then adjust for weekly hours and PTO for a true hourly rate. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Sand CalculatorFree sand calculator: patio footprint and bedding depth → cubic yards, bags, and bulk vs bag guidance. Paver bedding presets, round patio mode, order buffer. Imperial or metric. Runs locally in your browser.
• Scientific CalculatorUse a scientific calculator for trigonometry, logarithms, powers, roots, and constants with DEG/RAD support and instant browser-based results. Runs locally in your browser when supported—no upload required for normal use.
• Septic Tank CalculatorFree septic tank calculator: bedrooms or occupants → recommended tank gallons with daily flow estimate. Runs locally in your browser.
• Sleep Cycle CalculatorFind the best bedtime or wake-up time based on 90-minute sleep cycles. Minimize sleep inertia by waking at the end of a cycle. Runs locally in your browser when supported—no upload required for normal use.
• Sod CalculatorFree sod calculator: lawn area and pallet size → pallets and rolls to order. Lawn presets, trim buffer, sq ft per pallet from your farm tag. Imperial or metric. Runs locally in your browser.
• Soffit CalculatorFree soffit calculator: eave length and soffit depth → sq ft to cover with optional 4×8 sheet counts. Runs locally in your browser.
• Space Heater Cost CalculatorFree space heater cost calculator: heater watts and daily use → kWh and operating cost at your electric rate. Runs locally in your browser.
• Square Root CalculatorCalculate square roots, cube roots, and nth roots with decimal precision and simplified radical form for integers. Runs locally in your browser when supported—no upload required for normal use.
• Standard Deviation CalculatorCalculate population or sample standard deviation, see variance, and understand dataset spread with a simple variance-to-standard-deviation workflow. Runs locally in your browser when supported—no upload required for normal use.
• Steps to Distance CalculatorConvert steps to km or miles using step length, height, or averages. Reverse mode included—free, runs locally in your browser.
• Study Time Calculator — Plan Hours per Subject & DaySplit total study hours across subjects, weeks, and study days. No upload—runs locally in your browser. Free exam planning, no signup.
• Sump Pump CalculatorFree sump pump calculator: basement sq ft and head height → recommended GPM capacity with heavy-rain margin. Runs locally in your browser.
• Tile CalculatorFree tile calculator: floor area + tile size → tiles and boxes to buy with waste buffer. Bath and kitchen presets, 10–15% waste, imperial and metric. Runs locally in your browser.
• Time and a Half CalculatorFree time-and-a-half calculator — enter your regular hourly rate and overtime hours to calculate pay at 1.5× rate. Instant results for payroll and wage verification. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Tip CalculatorFree tip calculator — find tip amount, bill + tip total, and per-person share. Presets for common percentages (10%, 15%, 20%), custom %, and equal split. Runs in your browser. No signup.
• Topsoil CalculatorFree topsoil calculator: lawn or bed dimensions and fill depth → cubic yards, cubic feet, liters, and bags. Leveling and new bed presets. Runs locally in your browser.
• Turkey Serving CalculatorFree turkey serving calculator: guest count and lb per person → total turkey weight to buy, with optional leftovers buffer. Runs locally in your browser.
• Unit Price CalculatorFree unit price calculator: divide price by quantity to compare cost per unit across package sizes. Private, instant, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Voltage Drop CalculatorFree voltage drop calculator: amps, AWG, and run length → percent voltage loss. Extension cord and branch-circuit checks. Runs locally in your browser.
• Wallpaper CalculatorFree wallpaper calculator: room size, roll dimensions, and pattern repeat → rolls to buy. Room and accent-wall presets, waste buffer. Runs locally in your browser.
• Water Heater CalculatorFree water heater calculator: household size → tank gallon size or tankless GPM and BTU/hr. Tank and tankless modes. Runs locally in your browser.
• Water Intake CalculatorEstimate daily hydration using a weight-based formula with activity adjustments, then view results in liters, cups, and milliliters. Runs locally in your browser when supported—no upload required for normal use.
• Window AC Cost CalculatorFree window AC cost calculator: watts, hours per day, and $/kWh → monthly or seasonal electricity cost. Runs locally in your browser.
• Wire Gauge CalculatorFree wire gauge calculator: load watts or amps → minimum copper AWG with continuous-load sizing. 60°C NM-B ampacity reference. Pair with breaker and voltage drop tools. Runs locally in your browser.
• Work Hours Calculator — Net Hours, Breaks & Decimal TimeCalculate net work hours from clock-in, clock-out, and unpaid breaks—decimal output for timesheets. No upload: runs locally in your browser. Free.
• Yeast Converter CalculatorFree yeast converter: swap active dry, instant, and fresh yeast by potency — 2 tsp active dry → 1.5 tsp instant. Runs locally in your browser.
• Zakat CalculatorEstimate zakat from cash, metals, and assets minus short-term debts—nisab via 85g gold or 595g silver × your price per gram, then 2.5% if due. Rules vary. No signup. Runs locally in your browser when supported—no upload required for normal use.

Read and clean structured data: JSON/XML/YAML formatters, URL and JWT parsers, regex testers, SQL formatters, UUID and hash generators, QR codes, API keys, and similar—all in one hub. After generating values, use the same category to validate, diff, or pretty-print the result.

• .env ParserFree .env file parser — paste any .env file and extract all environment variables as structured JSON or YAML. Useful for config migration and debugging. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• API Key GeneratorGenerate cryptographically secure random API keys in hex, base64, or alphanumeric format — instantly in your browser with no upload, no signup.
• API Mock GeneratorFree API mock generator — create realistic mock API responses with custom status codes, response headers, and JSON body. Perfect for frontend development and testing. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Base ConverterFree number base converter — convert between binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), and text in real time. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Base64 Encoder & DecoderFree Base64 encoder and decoder — encode any text or data to Base64 and decode Base64 strings back to readable text. Supports URL-safe Base64 variant. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Browser InfoFree browser info checker — see user agent, screen size, viewport, DPR, language, and timezone instantly in your browser. Nothing is uploaded; data stays on your device.
• Code Minifier & BeautifierFree code minifier and beautifier — minify JavaScript, HTML, and CSS for production or beautify minified code for readability. Supports ES6+ and modern CSS syntax. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Color PickerFree online color picker — choose any color and instantly get HEX, RGB, HSL, HSB, and CMYK values. Copy color codes for CSS, design tools, and development. No signup. Runs locally in your browser when supported—no upload required for normal use.
• CORS Header GeneratorFree CORS header generator — configure Access-Control-Allow-Origin, methods, headers, and credentials. Preview the full CORS response header block instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Cron Expression GeneratorBuild cron schedules with live preview, timezone next runs, and platform snippets for Linux, Quartz, K8s, GitHub Actions & AWS. Browser-local.
• Cron ParserFree cron parser — paste any cron expression and get a plain-English description of when it runs, plus the next 10 scheduled execution times. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Cron TesterFree cron expression tester — validate cron syntax and preview the next scheduled run times in your timezone. Catch errors before deploying to production. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Crontab GeneratorFree crontab generator — build cron schedule expressions for Linux servers, CI/CD pipelines, and automation. Supports all 5-field and 6-field cron formats. No signup. Runs locally in your browser when supported—no upload required for normal use.
• CSS FormatterFormat CSS with consistent indentation and line breaks. Local beautification for readable stylesheets and git diffs. Runs locally in your browser when supported—no upload required for normal use.
• cURL to Fetch ConverterFree cURL to fetch converter — paste any cURL command and instantly get the equivalent JavaScript fetch() code with all headers, methods, and body included. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Domain ExtractorExtract deduplicated domains from logs, emails, and mixed text. URLs, markdown, hostnames. CSV/JSON export. No upload—100% browser-based.
• Extract Domain from EmailFree email domain extractor — paste a list of email addresses and instantly extract the unique domain names with deduplication and normalization. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Extract Domain from URLFree URL domain extractor — paste a list of URLs and instantly extract the root domain from each. Normalizes www, strips paths and query strings. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Extract Domains from Plain TextPaste notes, articles, or chat exports and get deduplicated website names (example.com). Tidy whitespace, copy or .txt download. No upload—runs in your browser.
• Git Commit GeneratorFree Git commit message generator — build Conventional Commits (feat, fix, chore, docs, refactor) with scope, breaking change flag, and body. Copy the formatted message instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• GraphQL FormatterFree GraphQL formatter — paste queries, mutations, or schema definitions and instantly get properly indented, beautified output with syntax validation. Perfect for debugging. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Hash GeneratorCompute MD5, SHA-1, SHA-256 and other digests from text locally. One-way hashing for checksums—not password storage.
• HTML Entity Encoder & DecoderFree HTML entity encoder—convert &, <, >, and quotes to &amp;, &lt;, &gt; and decode entities back. XSS-safe for templates. Runs locally in your browser; no upload.
• HTML FormatterFree HTML formatter—beautify minified markup with 2 or 4 space indent, minify for production. Runs locally in your browser; no upload or signup.
• HTTP Cookie Parser — Parse, Decode & Build Cookie StringsPaste any HTTP Cookie header, Set-Cookie header, or curl command to extract name, value, domain, path, expiry, Secure, HttpOnly, and SameSite flags. Build and export cookies too. No signup. Runs locally in your browser when supported—no upload required for normal use.
• HTTP Header GeneratorFree HTTP header generator — build Content-Type, Cache-Control, CORS, Authorization, and security headers with correct syntax. Copy for NGINX, Apache, or API responses. No signup. Runs locally in your browser when supported—no upload required for normal use.
• IP ConverterFree IPv4 converter — dotted decimal, 32-bit integer, hex, and binary octets from one paste. Batch CSV export. Runs in your browser. No signup.
• JSON Diff ToolFree JSON diff & compare — structural side-by-side diff, ignore paths, array modes, RFC 6902 patch and merge patch export. Runs locally in your browser—no upload.
• JSON FormatterFree JSON formatter — paste minified or messy JSON and instantly get beautified, indented output with syntax highlighting and error detection. Browser-based, no server upload. Runs locally in your browser when supported—no upload required for normal use.
• JSON Path FinderFree JSON path finder — click any value in a formatted JSON tree to instantly copy its JSONPath expression. Ideal for navigating deep API payloads and config files. No signup. Runs locally in your browser when supported—no upload required for normal use.
• JSON Schema GeneratorFree JSON Schema generator — infer Draft 2020-12 from sample JSON with TypeScript, Zod, Yup, and OpenAPI exports. No signup. Runs locally in your browser—no upload required.
• JSON ValidatorValidate JSON syntax and find errors instantly. Get clear error messages with line and column details. Runs locally in your browser when supported—no upload required for normal use.
• JWT Decoder — Decode & Inspect JSON Web TokensDecode JWT header and payload, check exp/iat claims, encode HS256 test tokens. No upload—runs in your browser locally. Free, no signup.
• JWT GeneratorCreate and sign JSON Web Tokens (JWTs) online with HS256, HS384, or HS512. Enter header, payload, and secret to generate a signed JWT instantly — fully browser-based. Runs locally in your browser when supported—no upload required for normal use.
• localStorage Viewer & InspectorFree localStorage viewer: search keys, JSON preview, edit, export, and bulk delete for this origin. Runs locally in your browser—never uploaded.
• Markdown EditorFree online Markdown editor — write Markdown with syntax highlighting and see the rendered HTML preview in real time. Export as HTML or copy formatted output. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• QR Code GeneratorFree QR code generator — create scannable QR codes from URLs, plain text, email, phone numbers, or Wi-Fi credentials. Download as PNG or SVG. No signup, no limits, fully browser-based. Runs locally in your browser when supported—no upload required for normal use.
• Query String ParserFree query string parser — paste any URL query string and instantly extract all parameter key-value pairs into a readable JSON or table format. Handles URL encoding. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Random Number GeneratorFree random number generator — Web Crypto integers or decimals, no-repeat draws, dice, coin flip, and list picker. Copy or CSV. Runs locally in your browser.
• Regex TesterFree regex tester — highlight matches, capture groups, flags, and replace preview. JavaScript RegExp in your browser; patterns and text stay on your device, nothing uploaded.
• Screen Resolution CheckerFree screen resolution checker — instantly see your screen resolution, viewport size, device pixel ratio (DPR), and current CSS breakpoint. Useful for responsive design testing. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Semver CalculatorFree semver calculator — compare two version strings, bump major, minor, or patch components, and sort version lists following SemVer 2.0 rules. Essential for npm, Cargo, and API release management. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Semver CheckerFree semver range checker — test whether a version string (e.g. 2.3.1) satisfies a range expression (^2.0.0, >=1.5.0 <3.0.0, ~2.3.x) following npm / SemVer 2.0 rules. Useful before upgrading package dependencies. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Semver TesterFree SemVer format validator — check whether a version string follows Semantic Versioning 2.0 (major.minor.patch with optional pre-release and build metadata). Catches leading zeros, missing patch components, and invalid identifiers instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Session Storage ViewerFree sessionStorage viewer — inspect, add, edit, and delete sessionStorage key-value pairs in your browser. Useful for debugging web apps and testing session data. No signup.
• SQL FormatterFormat SQL with indented clauses and keyword casing. Dialect-aware beautification runs locally—not on a server.
• SQL Query BuilderFree visual SQL query builder — select table, columns, WHERE conditions, JOIN type, and ORDER BY using a form and get the generated SELECT query instantly. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• String EscaperFree string escaper — escape or unescape strings for JavaScript, HTML, JSON, regex, and URL contexts with one click. Handles backslashes, quotes, newlines, and special characters. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Text Diff ToolCompare two plain-text inputs line by line and highlight changes. Local diff for logs and copy—not JSON structure. Runs locally in your browser when supported—no upload required for normal use.
• Text to Binary ConverterFree text to binary converter — encode any text to 8-bit binary (0s and 1s) and decode binary back to text. Supports ASCII and UTF-8 encoding. Instant, browser-based, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Text to Hex — UTF-8 Bytes, Hex Dump, Byte InspectorUTF-8 byte hex, code point & Latin-1 modes, byte inspector, hex dump, binary/Base64 compare—browser-local with share URL.
• TOML FormatterFormat and validate TOML config files like Cargo.toml and pyproject.toml instantly in your browser. Syntax highlighting, error detection, no upload required.
• URL BuilderFree URL builder — add a base URL, append query parameters, auto-encode values, and copy the complete URL string. Perfect for API testing, UTM links, and affiliate tracking. No signup. Runs locally in your browser when supported—no upload required for normal use.
• URL Encoder & DecoderFree URL encoder decoder for query values and full URLs—encodeURIComponent & encodeURI. Percent-encode or decode instantly in your browser; never uploaded.
• URL Parser — Break Down URL ComponentsParse any URL into scheme, host, port, path, query params, and hash. No upload—runs in your browser. Free for API and OAuth debugging.
• User Agent ParserFree user agent parser — paste any UA string and instantly identify the browser, version, operating system, device type, and rendering engine. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• UUID GeneratorFree UUID generator: v4, v7 & v1 GUIDs in your browser—bulk up to 1,000, validate, export JSON/CSV. crypto.randomUUID; never uploaded.
• YAML Formatter & ValidatorFree YAML formatter and validator — paste YAML to fix indentation, validate syntax, and detect errors instantly. Supports YAML 1.2. Perfect for Docker Compose and Kubernetes manifests. No signup. Runs locally in your browser when supported—no upload required for normal use.

Plain text workflows: counting words, fixing case, comparing drafts, generating placeholders or passwords, light editing in the browser. Reach for these when your input is copy-paste text rather than a binary file.

• Bold Text Generator — Unicode Bold & Fancy StylesFree bold text generator—Unicode bold, italic, monospace & script for Instagram, Discord, WhatsApp. No upload: runs locally in your browser.
• Character CounterFree character counter — count characters (with and without spaces), words, sentences, and lines in real time as you type or paste text. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Lorem Ipsum GeneratorFree Lorem Ipsum generator — create placeholder text by paragraphs, word count, or byte length for wireframes, mockups, and UI design. Classic or custom Lorem Ipsum. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Online NotepadFree online notepad — write and save notes with autosave to your browser's local storage. No account needed, no sync, completely private. Distraction-free writing tool. Runs locally in your browser when supported—no upload required for normal use.
• Password GeneratorFree password generator — create strong random passwords with custom length and character sets: uppercase, lowercase, numbers, and symbols. Copy instantly. Fully browser-based. Runs locally in your browser when supported—no upload required for normal use.
• Random String GeneratorFree random string generator — choose length and character set (alphanumeric, hex, base64, symbols) to generate cryptographically random strings. Copy or download instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Random Word Generator — Writing Prompts & GamesGenerate random words for writing prompts, games & brainstorming—filter by category, difficulty & letter. Runs locally in your browser; no upload, no signup.
• Reading Time CalculatorFree reading time estimator — calculate reading time for articles and blogs (word count ÷ WPM), speech time, and audiobook length. Paste text or enter count; runs locally, data stays on your device.
• Remove Extra SpacesFree whitespace cleaner — strip multiple spaces, trim leading and trailing whitespace, fix line breaks, and clean text formatting instantly. Paste and copy in seconds. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Text Case ConverterFree text case converter — convert to UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and sentence case instantly. One click, no signup, browser-based. Runs locally in your browser when supported—no upload required for normal use.
• Text Compare — Highlight Changes Between Two TextsCompare two texts with highlighted additions, deletions, and changes. No upload—runs locally in your browser. Free for proofreading, no signup.
• Word CounterInstantly count words, characters, sentences, paragraphs, and reading time. Great for essays, articles, and SEO writing. No signup — works as you type. Runs locally in your browser when supported—no upload required for normal use.
• Word Frequency CounterFree word frequency counter — analyze word usage in your text, see keyword density, and spot overused or underused terms. Essential for SEO audits and content optimization. No signup. Runs locally in your browser when supported—no upload required for normal use.

Length, weight, temperature, storage, speed, pressure—each converter sticks to one measurement family so you are not wading through unrelated units. Handy when you already know the “from” and “to” and just need the math.

• Area ConverterFree area converter — convert between square meters, square feet, acres, hectares, square kilometers, and more. See all unit conversions at once as you type. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Data Size Converter — MB, GB, TB & Binary UnitsConvert MB, GB, TB, KiB, MiB, and TiB with SI (1000) or IEC (1024) toggle. Runs locally in your browser—nothing uploaded. Free, instant, copy results.
• Energy Converter — Joules, Calories, kWh & BTUConvert joules, calories, kcal, kWh, BTU, and eV instantly—all units at once. Runs locally in your browser; nothing uploaded. Food labels, HVAC, and physics.
• Length ConverterConvert meters, feet, inches, miles, kilometers, yards, and more with fast live calculations across all major units. Runs locally in your browser when supported—no upload required for normal use.
• Power Converter — Watts, kW, Horsepower & BTU/hrConvert watts, kW, MW, mechanical & metric hp, BTU/h, and tons of cooling—runs locally in your browser, no upload. All units at once; pair with Energy Converter for kWh.
• Pressure ConverterFree pressure converter — convert between PSI, bar, pascal, kilopascal, megapascal, and atmospheres. Useful for plumbing, engineering, and tire pressure. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Speed ConverterFree speed converter — convert between km/h, mph, m/s, ft/s, knots, and Mach. Enter any speed and see all conversions instantly. Supports metric and imperial. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Temperature ConverterFree temperature converter — instantly convert between Celsius, Fahrenheit, and Kelvin. See all three temperature values update in real time as you type. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Volume ConverterFree volume converter — convert between liters, milliliters, gallons (US and UK), fluid ounces, cups, pints, quarts, and cubic meters. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Weight ConverterFree weight converter — kg to lbs, lbs to kg, oz to grams, and stone with exact international pound factors, conversion charts, and stone+lb display. Runs locally in your browser—no signup, no upload.

Anything tied to a calendar or a clock: adding days, age in years/months, time zones, work hours, or planetary time quirks. If the question is “when” or “how long,” this bucket usually beats a general-purpose calculator.

• Age Calculator — Years, Months, Days & Next BirthdayCalculate exact age from date of birth—years, months, days, next birthday. No upload: runs locally in your browser. Free, no signup.
• Age on Other PlanetsFree age on other planets calculator — find your age on Mars, Venus, Mercury, Jupiter, Saturn, Uranus, Neptune, and Pluto based on each planet's orbital period. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Break Time Calculator — Work Hours After BreaksSubtract lunch and breaks from shift times to get net work hours. No upload—runs locally in your browser. Free for timesheets, no signup.
• Date Calculator — Add, Subtract & Days Between DatesAdd or subtract days, weeks, months, or years from any date. Days-between mode included. No upload—runs locally in your browser. Free, no signup.
• Employee Hours TrackerFree employee hours tracker — log start/end times, breaks, and overtime for multiple employees. Calculate weekly totals and prepare payroll summaries. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Freelance Hours CalculatorFree freelance hours calculator — log start and end times for multiple projects to calculate total billable hours and estimate earnings at your hourly rate. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Hours CalculatorFree hours calculator — calculate the total time between any two times, including overnight spans. See results in hours and minutes or decimal format. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Hours Calculator with BreakFree hours calculator with breaks — enter start time, end time, and break duration to calculate net work hours. Perfect for payroll and timesheet accuracy. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Overtime Hours CalculatorFree overtime hours calculator — enter daily hours worked and your regular schedule limit to calculate total overtime hours. Supports daily and weekly overtime rules. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Pet Age CalculatorFree pet age calculator — convert your dog or cat's age into equivalent human years using breed-adjusted formulas. Great for understanding your pet's life stage. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Planet Distance ConverterFree planet distance converter — convert between astronomical units (AU), kilometers, and miles for solar system distances. See how far each planet is from the Sun. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Planet Size ComparisonCompare Mercury–Pluto diameters, masses & volumes vs Earth. NASA reference charts, ratios, shareable URLs—runs locally in your browser, no signup or upload.
• Planetary Day ConverterConvert Mars sols, Jupiter days, and planet rotations to Earth days. NASA rotation data, instant ratios—runs locally in your browser, no signup or upload.
• Planetary Year ConverterConvert Earth years to orbital years for all planets. A Mars year is 1.88 Earth years; a Neptune year is 165 Earth years. Browser-based, no signup, uses NASA IAU orbital data. Runs locally in your browser when supported—no upload required for normal use.
• Shift Hours Calculator — Day, Evening & Overnight ShiftsCalculate day, evening, or overnight shift hours with break deductions. Runs locally in your browser—never uploaded. Free for nurses and shift workers.
• Sunrise & Sunset on Other PlanetsHow long does daylight last on Mars, Venus, or Jupiter? Explore sunrise and sunset times based on each planet's rotation period and axial tilt. Browser-based, no signup. Runs locally in your browser when supported—no upload required for normal use.
• Time CalculatorFree time calculator — add or subtract hours, minutes, and seconds, or calculate the exact duration between two times. Handles overnight spans automatically. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Time ConverterConvert seconds, minutes, hours, days, weeks, and years instantly with live multi-unit calculations and accurate results. Runs locally in your browser when supported—no upload required for normal use.
• Time Duration CalculatorFree time duration calculator — calculate the exact duration between two dates or times in days, hours, minutes, and seconds. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Time Zone Converter — Convert Time Between CitiesConvert time between cities and IANA time zones with DST handled automatically. No upload—runs locally in your browser. Free, no signup.
• Timesheet CalculatorFree timesheet calculator — log daily work hours and breaks for a full week, calculate total regular and overtime hours, and prepare a payroll-ready timesheet. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Unix Timestamp Converter — Epoch to Human DateConvert Unix epoch to readable dates and back—seconds or milliseconds, UTC and local. No upload: runs in your browser. Free, no signup.
• Weight on Other PlanetsHow much would you weigh on Mars (38% of Earth), Jupiter (2.5×), or the Moon (16.5%)? Free weight on other planets calculator using NASA surface gravity values. No signup. Runs locally in your browser when supported—no upload required for normal use.

Front-end craft: WCAG contrast, palettes, gradients, shadows, Tailwind picks, favicons, and other CSS you can copy into a project. Photo retouching belongs under Image Tools; this row is about layout and styling code.

• Border Radius GeneratorFree CSS border radius generator — set individual corner values visually and copy the CSS border-radius property instantly. Supports all four corners independently. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Box Shadow GeneratorFree CSS box shadow generator — set X/Y offset, blur radius, spread, and color visually with live preview. Copy the finished CSS box-shadow property instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Clip Path GeneratorFree CSS clip-path generator — build polygon, circle, and ellipse shapes visually with draggable points and copy the clip-path CSS property instantly. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Color Contrast CheckerFree color contrast checker — test text and background color combinations for WCAG AA (4.5:1) and AAA (7:1) compliance. Essential for accessible web design. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Color Palette GeneratorFree color palette generator — create complementary, analogous, triadic, and monochromatic palettes from any base color. Copy HEX codes instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• CSS Button GeneratorFree CSS button generator — design custom buttons with gradients, shadows, border radius, and hover effects using visual controls. Copy the CSS and HTML instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• CSS Clamp CalculatorFree CSS clamp() calculator — generate responsive clamp() values for fluid typography and spacing. Enter minimum, maximum, and viewport sizes for instant CSS output. No signup. Runs locally in your browser when supported—no upload required for normal use.
• CSS Filter GeneratorFree CSS filter generator — create blur, brightness, contrast, grayscale, hue-rotate, and other filter effects with live preview. Copy the CSS filter property. No signup. Runs locally in your browser when supported—no upload required for normal use.
• CSS Gradient GeneratorFree CSS gradient generator — create linear and radial gradients with custom colors, stops, and directions. Live preview and one-click CSS copy. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• CSS Grid Layout GeneratorFree CSS Grid generator — define rows, columns, and named grid areas visually and copy the generated CSS grid-template code. Perfect for responsive web layouts. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• CSS Unit ConverterFree CSS unit converter — convert px, rem, em, vw, and vh with a custom root font size. See all CSS unit equivalents at once for responsive design. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• Favicon GeneratorFree favicon generator — create website favicons in 16×16, 32×32, 48×48, and 64×64 PNG sizes from text, emoji, or an uploaded image. Download as .ico or individual PNG files. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Glassmorphism GeneratorBuild frosted glass CSS with WCAG contrast checker, layer composer, VisionOS/Fluent presets, and full export—CSS, Tailwind, tokens, share URL. Blur 0–40px. Browser-only, no signup.
• Image Blend Mode ToolFree CSS mix-blend-mode tool—preview overlays, before/after split, download PNG, copy CSS/HTML/Tailwind/React. Runs locally; no upload or signup.
• Neumorphism GeneratorFree neumorphism generator — set element size, border radius, distance, blur, and intensity to create soft UI shadows. Preview flat, pressed, and raised styles. Copy CSS instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
• Spacing Scale GeneratorFree spacing scale generator — create 4px, 8px, or custom-base spacing systems and export them as CSS variables, Tailwind config, or design token JSON. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• SVG Icon CustomizerFree SVG icon customizer — adjust icon size, fill color, stroke width, and opacity with a live preview. Download the customized SVG or copy the inline code. No signup required. Runs locally in your browser when supported—no upload required for normal use.
• SVG to JSXFree SVG to JSX converter — paste SVG markup and instantly get React-compatible JSX with camelCase attributes, cleaned props, and self-closing tags. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Tailwind Cheat SheetInteractive Tailwind CSS reference and class composer—search thousands of utilities with CSS mappings, preview dark/responsive states, copy HTML/CSS, and export to Tailwind Play. Browser-local, no signup.
• Text Shadow & Glow GeneratorFree CSS text shadow generator — create single or multi-layer text shadows and neon glow effects with a live preview. Copy ready-to-paste CSS code instantly. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
• Typography Scale GeneratorFree typography scale generator—major third, perfect fourth, golden ratio. Export CSS variables & JSON tokens. Runs in your browser; never uploaded.

Change the shape of data for importers and scripts—CSV ↔ JSON, Excel, XML, Markdown exports, and the like. Think “wrong format for the tool I am pasting into,” not long-form writing.

• CSV to Excel — Convert CSV to XLSX FreeConvert CSV to Excel online: preview rows, auto-detect delimiter, download .xlsx. UTF-8/UTF-16, text cells for leading zeros. No upload.
• CSV to JSON ConverterConvert CSV to JSON with header detection and delimiter auto-detect. No upload—runs locally in your browser. Free paste or file, copy or download.
• Excel to CSV ConverterFree Excel to CSV converter — upload any XLSX or XLS file and download a clean CSV instantly. Supports multiple sheets, custom delimiters, and UTF-8 encoding. No signup. Runs locally in your browser when supported—no upload required for normal use.
• HTML to MarkdownFree HTML to Markdown converter — paste HTML and get clean Markdown output for GitHub docs, blog posts, Notion pages, and static site generators. Preserves links and code blocks. No signup. Runs locally in your browser when supported—no upload required for normal use.
• JSON to CSV ConverterFree JSON to CSV converter — convert JSON arrays to CSV with automatic header row extraction. Download for Excel or Google Sheets. Handles nested objects. No signup. Runs locally in your browser when supported—no upload required for normal use.
• JSON to XML ConverterFree JSON to XML converter — transform JSON objects and arrays into well-formed XML with pretty-print output. Supports attribute mapping. Perfect for SOAP APIs and legacy integrations. Runs locally in your browser when supported—no upload required for normal use.
• PDF to TextFree PDF to text extractor — extract all text from any PDF instantly. Copy to clipboard or download as .txt. Browser-based, no upload to server, fully private. No signup.
• Text to PDF Converter — Plain Text & .TXT to PDFConvert plain text or .txt to PDF in your browser—custom font, margins, A4/Letter, headers, page numbers. No upload, no signup. Up to 200k characters. Free.
• XML to JSON ConverterFree XML to JSON converter — paste XML and instantly get clean, structured JSON output. Handles attributes, nested elements, and CDATA sections. Perfect for REST API migration. No signup. Runs locally in your browser when supported—no upload required for normal use.

Preview STL, glTF, OBJ, and related assets in the browser, tweak shaders, capture views. Useful for quick inspection; heavy modeling still belongs in desktop 3D software.

• 360° Image Viewer — View Equirectangular Panoramas OnlineFree 360° equirectangular panorama viewer in your browser—drag to look around, zoom, fullscreen. JPEG, PNG, WebP. Never uploaded. No signup.
• 3D Model Screenshot Generator — Export PNG from 3D FilesRender PNG or JPEG screenshots from GLB, GLTF, STL, OBJ at custom angles and lighting. No upload—files stay on your device. Free in browser.
• 3D Model ViewerOpen and inspect GLB, GLTF, STL, and OBJ files in your browser—the universal default when you mix formats. Orbit, zoom, wireframe, and inspect materials. No install required.
• GLSL Shader EditorFree browser-based GLSL shader editor — write fragment and vertex shaders with real-time WebGL rendering. Includes u_time, u_resolution, and u_mouse uniforms for animated and interactive effects. Syntax highlighting, error console, and built-in examples. No install required. Runs locally in your browser when supported—no upload required for normal use.
• GLTF / GLB Viewer — PBR Materials, Animations & Scene HierarchyOpen GLB and GLTF 2.0 in your browser—PBR materials, animations, Draco, HD screenshots. Files stay on your device; no install or signup. Free glTF viewer up to 50 MB.
• STL File Viewer — Inspect Mesh, Dimensions & Print ReadinessOpen STL files in your browser—dimensions, wireframe, print readiness, build-volume fit. Binary & ASCII STL. Files stay on your device. No signup.