Time Card Calculator
Add up a whole week without the mental math. Enter your clock-in and clock-out times and lunch breaks, and the time card calculator returns daily hours, weekly totals, and overtime for you — overnight shifts handled automatically.
| Day | Start | End | Break (min) | Hours |
|---|---|---|---|---|
| Monday | 0.00 | |||
| Tuesday | 0.00 | |||
| Wednesday | 0.00 | |||
| Thursday | 0.00 | |||
| Friday | 0.00 | |||
| Saturday | 0.00 | |||
| Sunday | 0.00 |
How to add up a time card
A time card (or timesheet) totals the hours between when you clock in and clock out each day, minus any unpaid breaks. The math for one day is simple: end time − start time − unpaid break = worked hours. Doing it by hand for a whole week — and converting minutes to decimals — is where mistakes creep in, especially with lunch breaks and overnight shifts.
This calculator keeps everything in decimal hours, which is what payroll uses. So 8 hours and 30 minutes shows as 8.50, not 8:30. To convert on your own, divide the minutes by 60: 30 minutes ÷ 60 = 0.5.
Breaks, overnight shifts, and overtime
Enter unpaid meal breaks in the Break column. Under federal rules, bona fide meal periods (usually 30+ minutes) are unpaid, while short rest breaks (under 20 minutes) are normally paid — so don’t subtract those.
If End is earlier than Start, the shift is treated as crossing midnight and 24 hours are added. A 10:00 PM–6:00 AM shift counts as 8.00 hours.
Federally, hours over 40 in a workweek are overtime at 1.5× pay. Some states add daily overtime — for those, use the state overtime calculator.
Frequently asked questions
For each day, subtract the clock-in time from the clock-out time, then subtract any unpaid break. For example, 9:00 AM to 5:30 PM is 8.5 hours; minus a 30-minute lunch leaves 8.0 worked hours. This calculator does that for every day and adds up your week automatically.
Enter the unpaid break in minutes in the Break column. A 30-minute unpaid lunch reduces that day by 0.5 hours. Paid breaks (typically short rest breaks under 20 minutes) are usually counted as worked time, so leave those out of the break field.
Yes. If the clock-out time is earlier than the clock-in time, the calculator assumes the shift crossed midnight and adds 24 hours. For example, 10:00 PM to 6:00 AM with no break is counted as 8.0 hours.
By default this tool applies the federal FLSA standard: hours over 40 in a workweek are overtime, paid at 1.5× the regular rate. You can change the weekly threshold if your rule differs. Note that some states (California, Colorado, Alaska, Nevada and others) also require daily overtime — use our state overtime calculator for those.
It is an accurate hours-and-pay estimate for a standard weekly time card, but it is a planning tool, not a payroll system. It does not apply state-specific daily overtime, double-time, rounding policies, or local rules. Confirm final figures against your employer’s payroll and your state labor agency.