What Is a Time Card Calculator?

A time card calculator adds up clock-in and clock-out times across a workweek, subtracts unpaid breaks, and tells you the total hours worked — then splits that into regular and overtime hours. It's the same math your payroll department runs, just instant and in your own hands.

How Hours Are Calculated

If your clock-out time is earlier than your clock-in time, this calculator assumes an overnight shift and adds 24 hours automatically.

How to Use This Calculator

Enter your time in and time out for each day you worked, plus any unpaid break minutes (paid breaks shouldn't be subtracted). Leave days you didn't work blank. Add your hourly rate if you want estimated pay, including overtime, calculated automatically.

The Federal Overtime Rule (FLSA)

Per the U.S. Department of Labor, covered nonexempt employees must receive overtime pay at no less than 1.5× their regular rate for every hour worked beyond 40 in a single workweek. There's no daily overtime trigger under federal law — only the 40-hour weekly threshold.

State Rules Can Differ

Several states layer additional rules on top of the federal floor. California, for example, requires daily overtime after 8 hours in a single day, plus double-time after 12 hours. This calculator applies only the federal weekly standard — check your specific state's labor department if daily overtime rules might apply to you.

Worked Example

Someone clocking in at 9:00 AM and out at 5:30 PM each weekday, with a 30-minute unpaid lunch, works 8 hours/day — 40 hours for the week, all regular time, no overtime. Add a Saturday shift of 6 hours and the weekly total becomes 46 hours: 40 regular plus 6 overtime hours paid at 1.5×.

Exempt vs. Non-Exempt Employees

Overtime rules under the FLSA only apply to "non-exempt" employees. Many salaried employees in executive, administrative, or professional roles are classified as "exempt" and aren't entitled to overtime pay regardless of hours worked. If you're unsure which category applies to you, your employer's HR department or the DOL's fact sheets can clarify.

Pairing With Your Paycheck

Once you know your hours, check the resulting take-home amount with our paycheck calculator or USA paycheck calculator to see taxes and deductions applied. If you're salaried and want to know your effective hourly rate, our salary to hourly calculator handles that conversion.

Frequently Asked Questions