Time Card Calculator
Calculate total hours worked from your clock in and clock out times, minus unpaid breaks.
How do you calculate hours worked from a time card?
To calculate hours worked, subtract your clock in time from your clock out time to get the raw time span, then subtract any unpaid break minutes to arrive at your actual paid working time. This calculator converts both times into minutes since midnight, computes the difference, automatically handles overnight shifts where clock out happens after midnight, and subtracts your break minutes before converting the result into decimal hours for easy payroll entry.
Why decimal hours instead of hours and minutes?
Most payroll systems calculate pay using decimal hours (like 7.50 hours) rather than hours and minutes (7 hours 30 minutes), since decimal format multiplies cleanly against an hourly wage. This calculator shows both formats — the raw time span in hours and minutes for readability, and the final total in decimal hours for payroll purposes — so you can cross-check your own time card against what shows up on your paycheck.
Handling overnight shifts and unpaid breaks
If you clock out on the following calendar day, such as an overnight shift from 10:00 PM to 6:00 AM, this calculator automatically detects that the clock out time is earlier than the clock in time and adds 24 hours to compute the correct duration. Unpaid meal breaks and rest periods required by many state labor laws are subtracted from your total time span, since they're not counted as paid working hours even though you were on the clock during that period.
Frequently Asked Questions
How do I calculate hours worked from clock in and clock out times?
Subtract your clock in time from your clock out time to get the total span, then subtract any unpaid break minutes to get your actual worked time. This calculator does the math for you and converts the result into decimal hours for easy payroll entry.
How does this calculator handle overnight shifts?
If your clock out time is earlier than your clock in time (for example, clocking in at 10:00 PM and out at 6:00 AM), the calculator automatically adds 24 hours to the clock out time so the duration is calculated correctly across midnight.
Why is my total in decimal hours instead of hours and minutes?
Payroll systems typically use decimal hours (like 7.50 instead of 7 hours 30 minutes) because it's easier to multiply directly against an hourly wage. This calculator shows the decimal total for payroll purposes, along with the raw hours-and-minutes span for easy verification.
Should unpaid breaks be subtracted from my time card?
Yes, unpaid meal breaks and rest periods are not counted as working time under most employer policies and state labor laws, so they should be deducted from your total clocked time. Enter your unpaid break minutes above and the calculator will subtract them automatically.
How accurate is the estimated pay shown by this calculator?
The estimated pay is a simple multiplication of your total worked hours by your entered hourly wage, before taxes or deductions. For a full breakdown of take-home pay after taxes, use our paycheck calculator.
Can I use this calculator for multiple shifts in one day?
This calculator handles one continuous clock in/clock out period at a time. For split shifts, calculate each shift separately and add the resulting decimal hours together to get your total for the day.
Does this calculator account for overtime pay rates?
No, this calculator estimates pay at your standard hourly rate only. Overtime rules vary by state and employer — commonly 1.5x pay for hours beyond 40 per week — so check your employer's policy if you've worked overtime hours.
Why doesn't my time card match my paycheck exactly?
Employers sometimes round clock times to the nearest 5, 6, or 15 minutes, apply different break policies, or calculate overtime differently than a simple hourly multiplication. If there's a persistent discrepancy, compare your raw clock times against your employer's official timesheet system.