Work Hours Calculator

Calculate net hours worked for a single shift or a full weekly timesheet — enter clock-in, clock-out, and unpaid break minutes. Get decimal hours for payroll, automatic weekly overtime split, and CSV export. Overnight shifts and multi-day weekly grids are supported; everything runs locally in your browser.

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By Muhammad Abdullah Rauf · Founder, EverydayTools.proUpdated 2026-09-01· Reviewed by EverydayTools Editorial Team

What is a work hours calculator?

A work hours calculator computes net hours from clock-in and clock-out times, subtracts unpaid breaks, and outputs decimal hours for timesheets and payroll estimates.

Enter a start time, end time, and unpaid break duration to get net hours worked and decimal hours (for example, 7 hours 30 minutes = 7.5). Overnight shifts are handled automatically when the end time is earlier than the start on the clock.

Use decimal hours when exporting totals to time-tracking apps, invoicing clients, or comparing against weekly rollups. This tool runs entirely in your browser—shift times are not uploaded to servers.

Use decimal hours (7.5, not 7:30) when exporting totals to time-tracking apps.

Quick answers

Concise answers for common searches — definitions, steps, and comparisons.

How do you convert 7 hours 30 minutes to decimal?

Divide minutes by 60 and add to whole hours: 7 + (30 ÷ 60) = 7.5 decimal hours—not 7.30.

Are my shift times uploaded?

No. Calculations run locally in your browser; clock-in, clock-out, and break values stay on your device.

How to use Work Hours Calculator

  1. Enter your start time

    Type clock-in in HH:MM (AM/PM or 24-hour). Overnight shifts use actual times—midnight crossing is detected automatically.

  2. Enter your end time

    Type clock-out. If end is earlier than start (e.g., 10 PM to 6 AM), 24 hours is added to the end time before subtracting.

  3. Enter unpaid break minutes

    Subtract lunch or other unpaid breaks from gross duration. Paid breaks are not entered here.

  4. Copy decimal hours

    Use the decimal output (e.g., 7.5) when logging hours in spreadsheets or time apps.

Work Hours Calculator examples

Standard shift with lunch

Input

Start: 9:00 AM · End: 5:00 PM · Break: 30 min

Output

Net hours: 7.5

8 gross hours minus 30-minute unpaid break = 7.5 decimal hours.

Overnight shift

Input

Start: 11:00 PM · End: 7:00 AM · Break: 30 min

Output

Net hours: 7.5

Midnight crossing adds 24h to end time before break deduction.

Full work week (Mon–Fri)

Input

9:00 AM–5:30 PM each day · 30 min unpaid lunch

Output

40.0 net hours · 0 overtime

8.0 net hours × 5 days = 40.0 weekly total at federal 40-hour threshold.

Week with overtime

Input

Mon–Thu 9 AM–6 PM (8.5 net) · Fri 9 AM–5 PM (7.5 net)

Output

41.5 total · 1.5 overtime hours

34 + 7.5 = 41.5 weekly. Regular 40 + OT 1.5 in weekly mode.

Who uses Work Hours Calculator?

Common real-world scenarios where this tool saves time.

Shift workers

Convert a single clock-in/clock-out pair to net hours and decimal format for your records.

Students and interns

Track practicum hours across placements without a full weekly schedule tool.

Freelancers

Bill clients using decimal-hour totals after deducting unpaid lunch from a work block.

Workflow guides

Step-by-step chains that connect related tools for common tasks.

Single-day shift: clock in/out with lunch

Calculate net hours for one shift with an unpaid lunch break.

  1. Select Single-day mode.
  2. Enter your clock-in time (e.g., 8:30 AM) and clock-out time (e.g., 5:00 PM).
  3. Enter unpaid break minutes (e.g., 30 for a half-hour lunch).
  4. Read net hours (7.5) and decimal hours (7.50) from the results panel.
  5. Copy the decimal value to your timesheet or spreadsheet.

Weekly timesheet with overtime

Build a full 5-day or 7-day work week and see automatic overtime calculation.

  1. Switch to Weekly mode.
  2. Enter clock-in, clock-out, and break minutes for each day you worked.
  3. Leave unused days blank — the calculator skips them.
  4. Review the weekly total: regular hours (up to 40) and overtime hours (above 40) are shown separately.
  5. Export to CSV if you need to submit hours to payroll software or your employer.

Payroll estimate with overtime pay

Calculate gross weekly wages including time-and-a-half.

  1. Complete the Weekly timesheet (above) to confirm total hours.
  2. Switch to Payroll mode and enter your regular hourly rate.
  3. The tool applies 1.5× rate to any hours above 40 and shows straight pay, overtime pay, and total gross wages.
  4. For net (take-home) pay after taxes, use Salary to Hourly Calculator or Overtime Pay Calculator linked above.

Decimal hours vs hours:minutes

FormatExampleBest for
Decimal hours7.5Timesheets, payroll exports, spreadsheets
Hours:minutes7:30Reading clocks and shift schedules
Weekly rollup37.5 totalUse weekly work hours calculator after daily decimals

Common mistakes to avoid

Using 7:30 instead of 7.5 decimal hours

7 hours 30 minutes = 7.5 decimal hours, not 7.30.

Deducting paid breaks

Only enter unpaid break minutes; paid rest periods count as worked time.

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Frequently Asked Questions

How do I handle an overnight shift?

Enter start and end normally. When end is earlier than start, the tool adds 24 hours to the end time before computing net hours.

What is the decimal hours formula?

Decimal hours = whole hours + (minutes ÷ 60). Example: 7h 30m = 7.5.

Should I enter paid or unpaid breaks?

Enter only unpaid breaks (typical meal breaks). Paid breaks stay in gross time.

Is this the same as a weekly timesheet?

The single-day mode focuses on one shift. Switch to weekly mode to enter clock-in/clock-out for each day of the week and get a running total with automatic overtime detection.

Does Work Hours Calculator upload my shift times?

No. Clock-in, clock-out, and break minutes are calculated in your browser with JavaScript—shift data is not sent to EverydayTools servers during normal use.

Can I use decimal hours for payroll?

Decimal hours match many timesheet systems, but employer rounding and break policies may differ—verify with your payroll rules.

How do I calculate my total hours for the week?

Switch to Weekly mode and enter clock-in and clock-out times (plus break minutes) for each day you worked. The calculator sums all days into a weekly total and separates regular hours from overtime. Export as CSV to bring into payroll software.

What is overtime and when does it apply?

In the US, the Fair Labor Standards Act (FLSA) requires premium wages at 1.5× the regular rate for non-exempt employees who work more than 40 hours in a single workweek. Some states like California also require daily premium hours beyond 8 hours. Switch to Overtime mode and enter your regular weekly hours threshold to see how many hours qualify.

How do I calculate time and a half?

Time and a half = regular hourly rate × 1.5. If you earn $20/hr normally, premium hours pay $30/hr. In the Payroll mode, enter your hourly rate and the tool computes straight wages, premium wages, and total gross separately.

What are standard US weekly work hours?

The standard full-time workweek in the US is 40 hours. Beyond 40, federal law requires premium wages at 1.5× the regular rate for non-exempt employees. Part-time is typically under 35 hours. Salaried exempt employees are not covered by premium-hour rules regardless of hours worked.

How do I export my timesheet to CSV?

After entering your weekly schedule in Weekly mode, click the Export CSV button. The downloaded file includes date, clock-in, clock-out, break minutes, net hours, and decimal hours for each day — ready to paste into Excel, Google Sheets, or payroll software.

How do I calculate hours worked with breaks?

Total hours = (clock-out − clock-in) − unpaid break time. Example: 9:00 AM to 5:30 PM = 8.5 gross hours. Subtract 30 minutes unpaid lunch: 8.5 − 0.5 = 8.0 net hours. Enter the break in minutes and the calculator handles the subtraction automatically.

What is a time card calculator?

Enter clock-in, clock-out, and unpaid break minutes (or break start/end). This Work Hours Calculator is the single time-card and timesheet tool for net decimal hours—daily shifts, overnight wraps, and weekly totals in one place.

How do I calculate hours between two times in different days?

Use overnight shift mode: enter the start time on day 1 and the end time on day 2. The tool automatically detects when end < start and adds 24 hours before computing the difference. Example: 10 PM to 6 AM = 8 hours.

How many hours is a part-time job per week?

The IRS and ACA define part-time as under 30 hours per week. Most employers consider 35 hours or fewer to be part-time, though this varies. The weekly work hours calculator can track part-time schedules just as easily as full-time ones.

Does this work for shift workers with rotating schedules?

Yes. In weekly mode, each day is entered independently — you can mix day shifts, evening shifts, and overnight shifts in the same week. The tool handles overnight detection per row and sums all days correctly.

Privacy, accuracy, and trust

Privacy

Work Hours Calculator — Net Hours, Breaks & Decimal Time (/work-hours-calculator) runs in your browser when supported—inputs are not uploaded to EverydayTools servers.

Accuracy

Net hours follow the times you enter; overnight detection adds 24 hours when end precedes start on the clock.

Hour totals are estimates from the times you enter. Employer rounding and break policies may differ—keep your original shift records.

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Reviewed by EverydayTools Editorial Team on 2026-09-01.

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