Time duration calculator
Add multiple time entries to calculate total duration. Subtract breaks and apply an hourly rate for billing. Timesheet helper.
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- Reviewed 2026-01-15
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About the Time Duration Calculator
Add up multiple time entries (start → end) to get total working hours. Subtract a break duration and optionally apply an hourly rate to calculate earnings. Rounds to quarter-hours if needed for billing.
How to use the Time Duration Calculator
- Enter time pairs (start and end).
- Set break duration in minutes.
- Optionally enter an hourly rate.
- Choose rounding (quarter-hour).
- View total hours, decimal hours and earnings.
Frequently asked questions
How is total time calculated with multiple entries?
Each entry is calculated individually (end − start) and all durations are summed. Breaks are subtracted from the total.
What does rounding to quarter-hours mean?
Total minutes are rounded up to the next 15-minute increment. Common in legal and consulting billing.
Can I enter overnight shifts?
Yes. If the end time is before the start time, it is treated as crossing midnight.