Time Card Calculator
Add up a week of clock-in and clock-out times, subtract unpaid breaks, and get the decimal hours payroll actually uses — with overtime at 1.5× and the weekly gross.
The week
24-hour times, e.g. 09:00 and 17:30. Leave a day blank if you did not work it.
| Day | In | Out | Break (min) | Worked |
|---|---|---|---|---|
| Mon | — | |||
| Tue | — | |||
| Wed | — | |||
| Thu | — | |||
| Fri | — | |||
| Sat | — | |||
| Sun | — |
Week total
0.00 hours
0h 00m in hours and minutes
Gross, before tax. An out-time earlier than the in-time is treated as an overnight shift. Unpaid breaks are subtracted.
A time card calculator, a payroll clock calculator, a payroll hours calculator, a payroll minutes calculator and a payroll decimal calculator are the same job: turning clock times into the decimal hours a payroll system can multiply. The conversion is where the errors live — 7 hours 45 minutes is 7.75, not 7.45.
Reference
Minutes to decimal hours
Divide minutes by 60. Payroll multiplies decimal hours by the rate, so every hours-and-minutes figure has to be converted first. These are the values that come up on a rounded time card.
| Minutes | Decimal | Minutes | Decimal |
|---|---|---|---|
| 0 min | 0.00 | 25 min | 0.42 |
| 5 min | 0.08 | 30 min | 0.50 |
| 6 min | 0.10 | 36 min | 0.60 |
| 10 min | 0.17 | 40 min | 0.67 |
| 12 min | 0.20 | 45 min | 0.75 |
| 15 min | 0.25 | 48 min | 0.80 |
| 18 min | 0.30 | 50 min | 0.83 |
| 20 min | 0.33 | 54 min | 0.90 |
| 24 min | 0.40 | 55 min | 0.92 |
Worked example
Where a week goes wrong
Five days of 09:00 to 17:30 with a 30-minute unpaid lunch is 8 hours a day, 40 for the week. Read the same card as "8.30 hours" a day and it becomes 41.5 — an overpayment of an hour and a half, every week.
The error runs the other way just as easily:
- 7:45 read as 7.45 underpays by 18 minutes a day.
- 7:15 read as 7.15 underpays by 6 minutes a day, which is 26 hours a year.
- An overnight shift subtracted the wrong way gives a negative span, and usually gets typed in as a guess.
Convert first, add second. Once the week has a decimal total, the hourly paycheck calculator turns it into take-home pay, and the overtime calculator handles time and a half after tax.
FAQ
Frequently asked questions
How do I convert minutes to decimal hours for payroll?+
Divide the minutes by 60. So 45 minutes is 45 ÷ 60 = 0.75, and 7 hours 45 minutes is 7.75 hours — not 7.45, which is the single most common payroll arithmetic error. Payroll systems multiply a decimal number of hours by the rate, so anything recorded in hours and minutes has to be converted before it is multiplied. The conversion table on this page covers the common values.
What is 7 hours 30 minutes in decimal?+
7.5 hours. Thirty minutes is half an hour, so 30 ÷ 60 = 0.5. At $22 an hour that is $165.00 for the shift. The intuition to avoid is reading the minutes as a decimal fraction: 7:30 on a clock is 7.5 in payroll, and 7:15 is 7.25 rather than 7.15.
How do I calculate hours worked for a week?+
For each day, subtract the clock-in time from the clock-out time, take off any unpaid break, and convert to decimal hours. Add the days together for the weekly total. The calculator above does this for seven days at once and handles overnight shifts, where the clock-out time is earlier in the day than the clock-in time.
Are unpaid breaks deducted from hours worked?+
A genuine meal break where you are relieved of all duty is generally unpaid and comes out of hours worked. Short rest breaks, typically up to 20 minutes, are normally counted as hours worked and paid under federal rules. A meal break where you are still on duty — eating at a desk while covering phones — counts as work time. Enter only the genuinely unpaid minutes in the break column.
When does overtime start?+
Past 40 hours in a workweek for non-exempt employees under the federal Fair Labor Standards Act, paid at 1.5 times the regular rate. Several states add daily overtime — California, Alaska, Nevada and Colorado pay it past 8 or 12 hours in a shift regardless of the weekly total. The threshold above is adjustable for that reason. What overtime leaves after tax is on the overtime paycheck calculator.
Should I round employee time?+
Rounding to the nearest quarter hour is permitted under federal rules provided it is neutral over time — it must not systematically favour the employer. Rounding that always goes down, or that rounds only clock-ins up and clock-outs down, is not neutral and creates unpaid work time. The safest practice is to record actual times and convert them, which is what this tool does.
Does this include taxes?+
No. It returns gross pay for the week: hours times rate, plus overtime at 1.5x. To see what that leaves after federal income tax, Social Security, Medicare and state tax, put the rate and hours into the hourly paycheck calculator, which runs full 2026 withholding for any state.
How does the calculator handle an overnight shift?+
If the clock-out time is earlier in the day than the clock-in time — say in at 22:00 and out at 06:00 — the shift is treated as crossing midnight and counted as 8 hours rather than a negative span. Enter the times as they appear on the clock and the arithmetic follows.
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