Dates & time
Decimal hours converter
Convert decimal hours to hours:minutes:seconds and back.
A clear answer. Here’s how.
Decimal hours are rounded to the nearest second for duration output. Duration input uses H:MM or H:MM:SS, with minutes and seconds 00–59. Negative durations are supported.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Direction
- Decimal hours → duration
- Value to convert
- 1.5
Example result
1:30:00