What does a work hours calculator do?
It totals selected daily shifts after subtracting unpaid break minutes. Each day can use its own start time, end time and break.
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For optional supporting equipment or reference material, you can browse Digital timers (paid link) on Amazon.com. Measure an elapsed interval or follow a planned work period. Check the timer resolution and keep the calculator units consistent. No purchase is required to use this calculator.
How are overnight shifts handled?
If an end time is earlier than or equal to the start time, the calculator treats the end as occurring on the next day.
How are breaks handled?
Break minutes are subtracted from the elapsed shift duration. A break cannot exceed the shift length.
Can I use this as an official timesheet?
This page is a planning calculator, not a payroll record system. Employer rounding, meal-period rules and labor-law requirements can differ.
Worked example: Work Hours
Enter the following values in the Work Hours Calculator and calculate to reproduce this result.
- Monday: Included
- Start (entry 1): 09:00
- End (entry 1): 17:00
- Break min (entry 1): 30
- Tuesday: Included
- Start (entry 2): 09:00
- End (entry 2): 17:00
- Break min (entry 2): 30
- Wednesday: Included
- Start (entry 3): 09:00
- End (entry 3): 17:00
- Break min (entry 3): 30
- Thursday: Included
- Start (entry 4): 09:00
- End (entry 4): 17:00
- Break min (entry 4): 30
- Friday: Included
- Start (entry 5): 09:00
- End (entry 5): 17:00
- Break min (entry 5): 30
- Start (entry 6): 09:00
- End (entry 6): 17:00
- Break min (entry 6): 30
- Start (entry 7): 09:00
- End (entry 7): 17:00
- Break min (entry 7): 30
Example result: 37h 30m. The selected schedule totals 37h 30m after subtracting 150 break minutes.
Calculation used: MON 7h 30m · TUE 7h 30m · WED 7h 30m · THU 7h 30m · FRI 7h 30m
How to interpret this example
Five days of eight clock hours minus a 30-minute break each day gives 37.5 paid hours. The result does not decide whether a break is legally paid or whether overtime applies. Use the employer’s applicable pay rules for those questions.
Frequently asked questions
Sources and methodology
This calculator uses transparent browser-side date/time arithmetic. The references below provide standards or official context relevant to the calculation.