How it works
Convert an hours-and-minutes duration into decimal hours. Thirty minutes is 0.5 hour, not 0.30 hour.
decimal hours = hours + minutes/60
Worked example
Show example inputs and result
Hours: 7 · Minutes: 30.
- Decimal hours
- 7.5 h
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy