Time Duration Calculator

Find the exact time difference between two date-time values in days, hours, minutes, and seconds. All calculations run locally in your browser—your inputs never leave your device.

Calculate time between two moments

Choose a start and end date-time. This calculator will compute the duration between them, plus total hours and total minutes.

Start date & time

For example: the beginning of an event, shift, trip, or project.

End date & time

Must be later than the start date/time.

Select both date-times, then tap “Calculate Duration”.

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