Time Duration Calculator
Calculate hours and minutes between two clock times, including shifts that end after midnight and unpaid breaks.
Your result
Review your calculated values below.
Ready when you are.
Choose Calculate to see your result.
How to use this calculator
- Enter your values in the labeled fields, keeping the displayed units.
- Choose Calculate or press Enter in a single-line field.
- Review the result and the assumptions below before using it.
Formula and method
Net minutes = elapsed clock minutes − break minutes. If the end is earlier, it is treated as the following day.
Worked example
09:00 to 17:30 with a 30-minute break gives 8 hours, or 480 minutes.
What the result assumes
This is a clock-time calculation for intervals under 24 hours. Equal start and end times mean zero duration.
Common question
Does it handle overnight shifts?
Yes. For example 22:00 to 06:00 is eight hours before breaks. Date-specific daylight-saving changes are not modeled.