Work Hours Calculator
Calculate total work hours for a single shift between start and end times with one configurable break. Essential for timesheets and payroll. Numbers never leave your device — every calculation runs locally in your browser.
How to Use the Work Hours Calculator
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Frequently Asked Questions
How does the break deduction work?
Enter your start time, end time, and break duration in minutes. The calculator subtracts break time from total hours to give your actual worked hours.
Can I calculate weekly totals?
No — one shift (start, end, one break) per run; there is no day list or weekly sum. Run each day separately and add the totals yourself for timesheets and weekly pay.
Does it handle overnight shifts?
No — end time must be later than start time on the same day. An overnight span (e.g., 10 PM to 6 AM) yields a negative total instead of wrapping past midnight.
Can I enter decimal hours for breaks?
Break is a whole-minutes number for one shift. The tool subtracts break minutes from the shift span and shows hours and minutes (e.g., 7h 30m).
When using Work Hours Calculator, is my data stored?
No. All calculations run locally in your browser. No work hours or timesheet data are transmitted.
What does the 9–5 preset give?
09:00–17:00 minus 30 minutes = 7h 30m. Overnight shifts wrap past midnight instead of going negative (22:00 to 06:00 with no break = 8h 0m). Break is whole minutes for a single shift — run each day separately and add them for weekly totals.
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Last updated October 2026