Time Duration Calculator
Calculate the elapsed time between two dates and times in days, hours and minutes, total hours and h:mm.
Your inputs
Results
Duration
1 d 8 h 30 min
- Total hours
- 32.5
- Total minutes
- 1,950
- As h:mm
- 32:30
✓Exact calculation — rounded only for display
Notes for this result
- Both times are treated as the same local clock without daylight-saving changes. For times in different zones, use the Time Zone Conversion Calculator first.
What this calculator does
Useful for shifts, travel, rentals and project tracking that span midnight or several days.
Formula and method
Duration = (end date-time − start date-time) in minutes, shown as days, hours and minutes
Worked example
Calculated by this tool with its default inputs:
Inputs
- Start: 2026-01-01T22:00
- End: 2026-01-03T06:30
Results
- Duration: 1 d 8 h 30 min
- Total hours: 32.5
- Total minutes: 1,950
- As h:mm: 32:30
How to read the results
Both times are treated as the same local clock.
Assumptions and limitations
- Daylight-saving transitions within the period are not applied; convert to UTC first with the time zone tool if needed.
Questions
What if the times are in different time zones?
Convert both to one zone using the time zone conversion calculator first.
Methodology and verification
- Result type
- Exact mathematical calculation (rounded only for display)
- Formula version
- 1.0
- Automated verification
- 2 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
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