Hours & Minutes Calculator
Add and subtract hours:minutes durations — timesheets, shifts, project totals. Sum 7:30 + 8:15 correctly — free, local, no signup.
How to Use the Hours & Minutes Calculator
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Frequently Asked Questions
Why not decimal hours?
7:30 + 8:15 = 15:45, not 15.45 — sexagesimal carries confuse decimals. This tool carries minutes correctly past 60.
Weekly totals?
Chain daily entries: five 7:30 shifts total 37:30. Overtime thresholds compute from true totals.
Do duration sums upload?
No — math runs locally in your browser. Numbers never leave your device.
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Last updated October 2026