About the Time Duration Calculator tool
Total up video clip lengths, practice sessions or billable time. Type one duration per line (like 1:30:00 or 45) and the tool adds them up; start a line with a minus sign to subtract. There is also a quick “time between two clock times” calculator.
How to use it
- Enter durations one per line as h:mm:ss, h:mm, or plain minutes.
- Put a minus sign in front of any duration to subtract it.
- Read the total in h:mm:ss, decimal hours and minutes.
Frequently asked questions
How do I type 90 minutes?
Either type 90 (plain numbers are minutes) or 1:30.