Are discount calculations private?
Yes. Math runs locally in your browser. Prices you enter are not uploaded to EverydayTools servers.
Inputs
$
%
$
$
Enter original price and percent or dollar off to see what you pay and how much you save—plus reverse mode when you only know the sale tag. Calculated locally, never uploaded.
A discount calculator computes sale price and dollar savings from an original price and a percent or fixed discount—and can reverse-calculate the original price from a sale tag.
A discount reduces the price you pay. Enter an original price and either a percentage off (e.g. 25%) or a fixed dollar amount off to see the sale price and how much you save.
Core formulas:
Stacked discounts are not additive: 20% off then 10% off the reduced price is 28% total off the original, not 30%. Calculations run in your browser—prices are not uploaded to servers.
Percent-off and fixed-amount discounts both work; stacked promos need step-by-step math, not added percentages.
Concise answers for common searches — definitions, steps, and comparisons.
Yes. Math runs locally in your browser. Prices you enter are not uploaded to EverydayTools servers.
No. The second discount applies to the already-reduced price—effective total is 28% off $100, not 30%.
Original = sale price ÷ (1 − discount%). Example: $60 after 25% off → $60 ÷ 0.75 = $80.
Supports percent-off, fixed-amount-off, and reverse original-price mode using standard retail arithmetic.
Formula
Savings = original × (discount% ÷ 100) or fixed $
Sale price = original − savings
Original (reverse) = sale ÷ (1 − discount% ÷ 100)Type the full price before any discount (numbers only—no currency symbol in the field).
Select percentage off or a fixed dollar amount off, then enter the value.
Click Calculate to see final price, amount saved, and effective percent off.
If you know sale price and discount %, use reverse mode: original = sale ÷ (1 − discount%).
Input
Original: $79.99 · Discount: 30%Output
Sale price: $55.99 · You save: $24.00$79.99 × 0.30 = $24.00 savings; final price $55.99.
Input
Original: $120 · Sale price: $89Output
Discount: 25.8% off · You save: $31.00($120 − $89) ÷ $120 = 25.8% when the tag shows only dollar prices.
Input
Original: $200 · 20% then 15% on reduced priceOutput
Final: $136 · 32% off original (not 35%)$200 × 0.8 = $160, then $160 × 0.85 = $136.
Common real-world scenarios where this tool saves time.
Verify shelf tags, compare BOGO vs percent-off, and see true savings before checkout.
Set sale prices for campaigns or work backward from a target final price.
Convert dollar savings to percentages for budgets and presentations.
Step-by-step chains that connect related tools for common tasks.
| Need | Discount Calculator | Use instead |
|---|---|---|
| Sale price from % or $ off | Yes | — |
| Tip on a restaurant bill | Similar math | Tip Calculator |
| Margin from cost and price | — | Profit Margin Calculator |
| Generic % of a number | — | Percentage Calculator |
| Type | Formula | Example ($80 original) |
|---|---|---|
| Percent off | Savings = price × (pct ÷ 100) | 25% off → save $20, pay $60 |
| Fixed amount | Savings = fixed dollars | $15 off → pay $65 |
| Stacked % | Apply each % to reduced price | 20% then 10% ≠ 30% total |
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Sale price = original × (1 − discount%). For 25% off $80: $80 × 0.75 = $60. Savings = $80 × 0.25 = $20.
Original = sale price ÷ (1 − discount%). $60 after 25% off: $60 ÷ 0.75 = $80.
No. 20% then 10% on the reduced price equals 28% total off the original, not 30%.
Discount% = ((original − sale) ÷ original) × 100. $120 down to $90 is 25% off.
Yes. Switch to fixed amount mode and enter dollars off—the tool computes final price and savings.
No. Calculations run locally in your browser.
Prices and discount values are processed in your browser—they are not uploaded to EverydayTools servers.
Formulas follow standard percent-off and fixed-amount retail math; stacked discounts require sequential application.
For tax-inclusive pricing or complex promotions, confirm with the retailer’s final receipt. Financial results are estimates for planning only — not tax, legal, or investment advice. Verify with your employer, institution, or a qualified professional.
More free tools for the same workflow.
Free 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.
Free unit price calculator: divide price by quantity to compare cost per unit across package sizes. Private, instant, no signup.
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Reviewed by EverydayTools Editorial Team on 2026-05-20.