Time Card Calculator
Result Summary
No results yet
Enter your details and hit “Calculate” to see your results.
About the Time Card Calculator
If you punch a clock — or manage people who do — you eventually face a stack of in/out times that need totaling: 9:07 AM to 5:33 PM with a half-hour lunch, five days straight. Doing that in your head mixes base-60 time math with base-10 pay math, which is exactly where payroll errors come from.
Enter up to 14 days of clock-in, clock-out, and unpaid break minutes, plus an optional hourly rate, and the calculator returns total hours in both decimal and hours:minutes form, the daily average, single-week overtime past 40 hours, and gross pay with the overtime premium applied.
Just converting a single time like 7:45 into decimal form? The Hours to Decimal Calculator
How to Fill In Your Time Card
Four steps, then hit calculate:
- Enter your hourly rate — or 0 if you only need hours, not pay.
- Enter how many days you worked (1–14; use 5 for a standard week, 10 for a biweekly card).
- For each day, enter clock-in and clock-out times — 9:00 AM / 5:30 PM or 24-hour 09:00 / 17:30 both work.
- Enter unpaid break minutes for each day (a 30-minute lunch = 30; enter 0 for none).
Worked example: five days of 9:00 AM to 5:30 PM with a 30-minute unpaid lunch is 8.00 hours per day — 40.00 hours for the week. At $15/hour that’s $600.00 gross. Stretch those same five days to 6:30 PM and the card shows 50.00 hours: 40 regular + 10 overtime, for $825.00 gross at time-and-a-half.
Minutes to Decimal Hours
Payroll systems pay in decimal hours, not minutes — 15 minutes isn’t 0.15 hours, it’s 0.25. The conversion is minutes ÷ 60:
| Minutes | Decimal hours | Pay at $15/hr |
|---|---|---|
| 5 | 0.08 | $1.25 |
| 10 | 0.17 | $2.50 |
| 15 | 0.25 | $3.75 |
| 20 | 0.33 | $5.00 |
| 30 | 0.50 | $7.50 |
| 40 | 0.67 | $10.00 |
| 45 | 0.75 | $11.25 |
| 50 | 0.83 | $12.50 |
| 60 | 1.00 | $15.00 |
So 0.75 on a time card means 45 minutes, and 10 minutes shows up as 0.17 hours. If your pay stub says 38.25 hours, that’s 38 hours 15 minutes.
Rounding & Overtime Rules
Many US employers round punches to the nearest quarter hour using the widely used “7/8-minute” convention: 1–7 minutes past the quarter rounds down, 8–14 minutes rounds up — so a 9:07 punch-in becomes 9:00 and 9:08 becomes 9:15. Rounding is expected to average out neutrally over time rather than consistently favor the employer. This calculator totals your actual entered times; if your workplace rounds, enter the rounded punches to match your pay stub.
The US federal overtime standard is 1.5× the regular rate for hours past 40 in a single workweek. Some states go further — California, for example, adds daily overtime past 8 hours. On biweekly cards, overtime is still assessed week by week, never on the 80-hour total; that’s why this calculator only splits overtime automatically when your entry covers 7 days or fewer. For a biweekly card with overtime, run each week separately.
Frequently Asked Questions
How do I figure out my time card?
For each day: clock-out time minus clock-in time, minus unpaid breaks. Convert the leftover minutes to decimal (minutes ÷ 60), add the days together, and multiply by your rate — with hours past 40 in a week at 1.5×. This calculator runs all of those steps at once.
How much is 10 minutes on a time card?
10 ÷ 60 = 0.17 decimal hours (rounded from 0.1667). At $15/hour that’s $2.50. Workplaces that round to the quarter hour would record 10 minutes as 0.25.
How much is .75 on a time card?
0.75 hours = 45 minutes (0.75 × 60). Decimal-hour entries convert to minutes by multiplying by 60: 0.25 = 15 minutes, 0.50 = 30 minutes, 0.75 = 45 minutes.
How do lunch breaks affect my hours?
Unpaid meal breaks are subtracted from the day’s span — a 9:00 AM to 5:30 PM shift with a 30-minute unpaid lunch pays 8 hours, not 8.5. Short paid breaks (commonly 5–20 minutes) typically stay on the clock, so don’t enter those.
How does overtime work on a biweekly time card?
Overtime applies per workweek, not per pay period: 45 hours one week and 35 the next means 5 overtime hours even though the total is exactly 80. Enter each week separately to see its overtime split.
Can I enter an overnight shift?
Yes — if the clock-out time is earlier than the clock-in time, the calculator assumes the shift crossed midnight: 10:00 PM to 6:00 AM counts as 8 hours.
Methodology. This calculator uses standard, peer-reviewed mathematical formulas. It is reviewed and maintained by the Vast Calculators editorial team.
Last updated · July 2026
Results are estimates for general use; verify critical figures independently.