Time Card Calculator
Free time card calculator: enter daily clock-in and clock-out times, get weekly work hours in decimal, overtime past 40 hours at 1.5x pay, and gross wages.
Last reviewed: January 2026 · Tax data verified against IRS Publication 15-T & state revenue departments
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How This Calculator Works
This calculator turns a week of punch-clock times into payroll-ready numbers. Type when you clocked in and out for each day, set the unpaid break, and the tool converts raw times into decimal hours - the format every payroll system multiplies by your rate. Monday through Friday, 9:00 to 5:00 with a 30-minute lunch, becomes 7.50 hours a day and a 37.50-hour week.
The decimal conversion is plain division: minutes worked divided by 60. Forty-five minutes is 0.75 of an hour, so 7 hours 45 minutes counts as 7.75 hours. Payroll pays decimal hours, which is why a hand-written "7.45" on a paper time card quietly costs you money - that is 6 minutes per day, half an hour per week, 26 hours a year.
Overtime follows the federal FLSA standard: any minute past 40 hours in a single workweek is paid at 1.5x your regular rate. The switch is on by default; turn it off if you are salaried-exempt or just want straight-time totals. A workweek is a fixed, recurring 168-hour window your employer chooses - overtime is never averaged across two weeks, no matter how you are paid.
California is the big exception: it requires daily overtime (1.5x over 8 hours in a day, 2x over 12) on top of the weekly rule. This card follows the federal weekly standard used by the other 49 states and most payroll systems. If you work in California, double-check your daily totals against the daily thresholds.
Overnight shifts are handled automatically: a 22:00 to 06:00 shift crosses midnight and counts 8.00 hours, never a negative number. This is a work-hours tool, so it stops at gross pay - for taxes and take-home, run your weekly result through the paycheck calculator.
How It's Calculated
Formula
Step-by-Step
- 1For each day: worked span = clock out minus clock in (add 24 h if the shift crosses midnight), then subtract unpaid break minutes
- 2Convert each day to decimal hours: minutes / 60 (7 h 45 m = 7.75)
- 3Total the week: minutes over 40 hours become overtime at 1.5x, everything else stays regular
- 4Regular pay = regular hours x hourly rate
- 5Overtime pay = overtime hours x hourly rate x 1.5
- 6Gross pay = regular pay + overtime pay
Example
For detailed data sources and full methodology, see our Methodology & Data Sources page.
Key Rates & Data for 2026
Federal OT Threshold
Over 40 hours per workweek
FLSA Overtime Multiplier
1.5x the regular rate
Full-Time Standard Year
2,080 hours (40 h x 52 wk)
Decimal Hour Rule
7 h 45 m = 7.75 hours
Default Unpaid Break
30 minutes (set 0 if paid)
Frequently Asked Questions
How do I calculate hours worked from a time card?
How does weekly overtime work on a time card?
Does California count overtime differently?
Should unpaid breaks be deducted from my hours?
How do overnight or graveyard shifts work?
How do I turn my weekly hours into gross pay?
Is overtime calculated per week or per paycheck?
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