Time Card Calculator
Clock in and out times → total hours, overtime, and pay for the period
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Quick summary
Enter clock-in and clock-out times for each day (with unpaid break minutes) and the calculator totals your hours, splits regular from overtime at the 40-hour threshold (adjustable), and computes pay at 1.5× for the overtime portion. Overnight shifts — clock-out earlier than clock-in — are handled automatically by assuming the shift crosses midnight.
Reviewed by Simple Calculators TeamLast reviewed
For planning only — not financial or tax advice. Results are estimates based on your inputs and the stated assumptions. Confirm important decisions with a qualified professional.
How to use this calculator
- Enter the inputs requested by the calculator.
- Choose the units or options that match your situation and review the assumptions.
- Run or update the calculation to see the result.
- Review the result, breakdown, and formulas shown on the page.
- Check the inputs, units, dates, and limitations before saving or sharing the result.
Frequently asked questions
How do I calculate hours worked from clock in and clock out?
Subtract clock-in from clock-out, then subtract any unpaid break time. Working 9:00 AM to 5:00 PM with a 30-minute unpaid lunch is 8 hours minus 0.5 hours = 7.5 hours. Paid breaks (usually under 20 minutes under FLSA guidance) should NOT be subtracted — only unpaid meal periods.
How does overtime get calculated on a time card?
Federal law counts overtime after 40 hours in a single workweek, paid at 1.5× the regular rate for the excess. If your five days total 50 hours, that's 40 regular + 10 overtime — this calculator splits it automatically once you set your hourly rate.
How do I handle an overnight shift on a time card?
If clock-out is earlier than clock-in (e.g., 10:00 PM to 6:00 AM), the shift is treated as crossing midnight and the hours are calculated correctly — an 8-hour overnight shift shows as 8 hours, not a negative number.
Should lunch breaks count as work hours?
Only if they're paid or you're not fully relieved of duties. A genuine unpaid meal break (typically 30+ minutes, off-duty) is excluded from hours worked under FLSA — enter it as break minutes and it's subtracted automatically.
Key terms
- Timesheet
- A record of hours worked per period — what this calculator produces from raw clock times.
- Overtime Threshold
- Federal default is 40 hours/week; some states and the 8/80 hospital rule differ.
- Unpaid Break
- Off-duty meal periods excluded from paid hours — distinct from short paid rest breaks.
Methodology, sources & limitations
This page shows the formula, assumptions, and limitations used for this estimate. Rates, thresholds, and other time-sensitive inputs can change, so verify them against the relevant official source before relying on a result.
For our review approach and the primary sources we consult, see the methodology and source policy. If you spot an outdated figure or formula, please contact us with a correction.