Unit Converters · Free tool
Time Duration Calculator
Calculate the precise hours, minutes, and seconds between two times. Essential for timesheets and podcasts, available online for free with no download.
Duration
8h 30m
Total minutes
510
Decimal hours
8.5
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What it does
Calculate the duration between two clock times, or add/subtract a duration from a starting time. Handles overnight spans (22:00 → 06:00 = 8 hours) and shows the answer in hours, minutes, total minutes, and decimal hours — the format payroll systems expect.
Useful for timesheets, work shifts, and travel planning. For calendar-date differences see date difference calculator; for time zones, use time zone converter.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/time-duration-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Time Duration Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Pick duration mode or add/subtract mode.
- Enter start and end times (or a start time and a duration).
- Toggle overnight if the end is the next day.
- Read hours, minutes, decimal hours.
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