Time Duration Calculator

Find how many hours and minutes pass between two clock times (handles overnight spans).

How to use

Enter start and end times as HH:MM.

End time minus start time; wraps at midnight.

24-hour format recommended.

Does it handle overnight?

Yes, if end is earlier than start it adds 24 hours.

Calculate exact age in years, months and days, plus total months, weeks, days and next bi…

Find the exact difference between two dates in days, weeks, months and years.

Add or subtract years, months and days to/from any date.

Calculate hours worked between two times minus a break.

Add business days (excluding weekends) to a start date.