Time Duration Calculator
Calculate hours and minutes between two times, minus breaks.
How to use the Time Duration Calculator
Great for timesheets and shift work — handles overnight shifts that cross midnight.
Formula
Duration = End − Start − Break (add 24 h if End < Start)
Worked example
09:15 to 17:40 with a 30-minute break is 7 h 55 min (7.92 hours).
Frequently asked questions
How do I convert minutes to decimal hours?
Divide minutes by 60: 55 minutes is 0.92 hours.
Results are estimates for educational and planning purposes. Always confirm important financial, health or legal decisions with a qualified professional. Last reviewed 2026-09-27.