Time Card Calculator

This time card calculator totals weekly work hours from selected work days, daily start and end times, optional lunch settings, and a weekly overtime threshold. It returns total hours, regular hours, overtime hours, paid hours per selected day, and a day-by-day breakdown.

How to use this calculator

Turn on the days worked, then enter start hour, start minute, end hour, and end minute in 24-hour time. If lunch is unpaid, keep include lunch break enabled and enter the lunch duration plus lunch start time. Finally, set the weekly overtime threshold, such as 40 hours.

For one-off shift start and end planning, use the shift calculator. For non-payroll intervals with seconds, use the time duration calculator.

How it works

The calculator converts clock times to decimal hours, adjusts overnight shifts by adding 24 hours when needed, subtracts lunch when enabled, then totals selected days.

$paid\ day\ hours = end\ time - start\ time - lunch\ duration$

$overtime = total\ hours - weekly\ threshold$

Overtime is never negative; hours below the threshold remain regular hours.

Worked example

A Monday through Friday schedule from 09:00 to 17:00 with a 60-minute lunch gives 7.00 paid hours per day. Across five days, total time is 35.00 hours, all regular if the threshold is 40 hours.

Payroll notes

This is time arithmetic, not legal advice. Employers may apply rounding rules, paid rest breaks, daily overtime, holiday rules, or local meal-period requirements. Keep official time records for payroll.