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Time duration calculator between two dates and times

Find the exact time between a start and an end date and time, in days, hours and minutes, decimal hours and total minutes.

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How to use this tool

  1. Enter your values or choose a local file. Replace the example data with your own.
  2. Review options, units and assumptions, then run the tool.
  3. Check the result before copying or downloading it. Keep an original copy of important files.

Method & assumptions

Find the exact time between a start and an end date and time, in days, hours and minutes, decimal hours and total minutes.

duration = end − start

Worked example

Start date: 2026-10-12
Start time: 08:30
End date: 2026-10-14
End time: 17:15

→ Duration: 2 d 8 h 45 min
→ Hours and minutes: 56:45:00
→ Decimal hours: 56.75
→ Total minutes: 3,405
→ Weeks and days: 0 weeks 2 days

Limits & important notes

Basic release. Review the result before relying on it. File limits, supported cases and processing requirements are shown above.

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Are my inputs stored?

Your inputs stay in this tab. We do not receive your files, pasted text or calculation values.

Is this tool free?

Yes. No signup or payment is required.

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