Timesheet calculator: add up one or two weeks of hours
Type the in and out times for each day, like 7:45a-4:15p, for one week or a two-week pay period. You get hours per week in decimal, overtime counted week by week, and gross pay.
How to calculate hours on a timesheet
For each day, subtract the start time from the end time, take off the unpaid break, and add the days together. Then turn the minutes into decimal hours for payroll.
- Find each day's span. 7:45 am to 4:15 pm is 8 hours 30 minutes.
- Take off the unpaid lunch. With a 30 minute lunch the day is 8 hours. If you punched out for lunch, type both parts, like "7:45-12, 12:30-4:15", and the real gap comes off instead.
- Add the week. Four of those days plus a Friday of 7:45 to 3:15 is 32 + 7 = 39 hours.
- Convert to decimal. 39 hours 20 minutes is 39.33 hours. Divide the minutes by 60; the conversion chart lists every minute.
The calculator does all four steps as you type, and the note under each row shows how it read the times, so a wrong am or pm is easy to spot.
Biweekly timesheets: overtime is still weekly
A two-week pay period does not change how overtime works. Federal law counts overtime in each 7-day workweek on its own, so the two weeks are never averaged.
| Week 1 | Week 2 | Pay period | |
|---|---|---|---|
| Hours worked | 48 | 32 | 80 |
| Overtime | 8 | 0 | 8 |
An 80 hour pay period can hold 8 hours of overtime, and one that adds up to under 80 can still owe some. At $18 an hour, the 8 hours above are worth $72 more than paying all 80 at the regular rate. Switch to "Two weeks" above and the totals are worked out week by week.
Semi-monthly pay periods (the 1st to the 15th, and the 16th to the end of the month) work the same way: overtime belongs to the workweek it was earned in, even when a week is split across two paychecks.
Which lunch breaks come off
A real meal break of 30 minutes or more, with no work, can be unpaid. Short breaks of 5 to 20 minutes count as hours worked under federal rules and stay on the timesheet. The calculator takes the unpaid lunch off days longer than 5 hours only, because short shifts rarely have one. Set it to "None" if your lunch is paid.
In California, a missing or late meal break owes one extra hour of pay. The meal break premium calculator checks each day's punches for it.
Timesheet, time card or overtime calculator?
- This timesheet calculator: in and out times for one or two weeks, with a week-by-week total.
- Time card calculator: the same for one week, with lunch and overtime on and a shareable link.
- Overtime calculator: when you already know the hours per day and want to compare state rules.
Need a blank sheet to write times on first? Print a free time card or download the Excel time card template.
A calculator, not legal or tax advice. Overtime rules from the US Department of Labor and state labor departments, checked November 15, 2026.
Ready to add up your own week?
Open the time card calculator