Work Hours Calculator
Calculate daily, weekly, and monthly work hours from clock-in, clock-out, and break time.
Work Hours Result
Daily time before break
9h
Daily net work time
8h
Weekly work hours
40h
Estimated monthly hours
173.8h
Weekly rest note
Weekly work time is at least 15 hours. Weekly rest or pay rules may need review.
Work Hours and Timesheet Calculator
The work hours calculator subtracts break time from clock-in and clock-out times, then estimates daily, weekly, and monthly totals.
Work Hours Calculation Guide
Work Hours Formula
Net work time is calculated by subtracting clock-in from clock-out and then deducting break minutes. Overnight shifts are handled as next-day clock-outs.
Part-Time Timesheets
For part-time work, daily net time and weekly work days are both important. The page highlights when weekly hours may need additional review.
Spreadsheet Alternative
Use the web calculator for quick checks before building recurring spreadsheet formulas or payroll templates.
Monthly Work Hours
Weekly hours are multiplied by an average 4.345 weeks per month to estimate monthly work hours for pay and scheduling checks.
Weekly Rest Review
When weekly hours reach the review threshold, the page flags that weekly rest or pay rules may need a separate check.
Overnight Shifts
If clock-out is earlier than clock-in, the calculator treats it as next-day clock-out for night shifts and rotating schedules.
Work Hours Calculator FAQ
Can it calculate overnight shifts?
Yes. If the end time is earlier than the start time, it is treated as the next day.
Can I subtract break time?
Yes. Enter break minutes and they are deducted from total work time.
Is this legal advice?
No. It is a time calculator only. Payroll and labor-rule decisions depend on contracts and local rules.