Time & Date
Time Duration Calculator
Calculate duration between two times
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-08
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
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Frequently asked questions
What does the Time Duration Calculator do?
It helps you calculate duration between two times.
What inputs do I need?
Enter Start date & time and End date & time.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
This Time Duration Calculator turns your inputs into practical results. Provide Start date & time and End date & time to calculate Days and Hours.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.