Time Duration Calculator
Free time duration calculator, find days, hours, and minutes between two dates or times. Hours between dates, date difference, and time-between-times in one tool.
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How it works
Enter a start and end date/time (or HH:mm for same-day gaps). See a breakdown in days, hours, minutes, and seconds plus total hours.
About Time Duration Calculator
Informational only, not professional advice. Report an error.
Counting days or hours between two dates by hand invites off-by-one errors, especially across month boundaries or partial days.
Enter full datetimes for project timelines, or date-only values for a simple day counter. Same-day time mode accepts HH:mm pairs to measure meeting gaps or shift lengths.
Results show days, hours, minutes, and seconds plus total hours for spreadsheet-friendly numbers. Everything calculates in your browser.
Quick tips
- Date-only inputs count calendar days, not 24-hour blocks from midnight.
- Cross-timezone events may need manual adjustment, this tool uses the dates you enter as-is.
- Pair with the Age Calculator when you need birth-date semantics instead of raw elapsed time.
Duration calculators
Open the time duration calculator for any custom start and end.
This tool is part of the free General collection on FindMeTool. Explore more General tools or browse the full tool directory.