What This Calculator Estimates
This calculator estimates worked hours based on a start time, end time, and break length. It can help with timesheets, schedule planning, and shift checks.
How to Use This Calculator
- Choose a start time.
- Choose an end time.
- Enter unpaid break minutes if needed.
- Click Calculate Hours.
- Review the estimated total in hours and minutes.
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Frequently Asked Questions
What does this hours calculator estimate?
It estimates worked hours between a start time and end time after subtracting a break.
Can it handle overnight shifts?
Yes. If the end time is earlier than the start time, it treats the shift as overnight.
Do I have to enter a break?
No. You can enter zero if there is no unpaid break.
Does it show decimal hours?
Yes. It shows both total minutes and decimal hours.
When should I recalculate?
Recalculate whenever your shift times or break length changes.
This calculator provides worked-hour estimates only. Employer policies, rounding, and paid break rules may vary.
Last updated: May 11, 2026