Decimal Hours Calculator
Convert an hours-and-minutes duration into decimal hours.
01 / inputs
H:MM
02 / result
DECIMAL HOURS
2.5
- Decimal hours
- 2.5
- Entered duration
- 2:30
Calculation trace
- 2 + 30 ÷ 60 = 2.52.5 hoursDecimal hours
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SOURCES
- International Organization for Standardization (ISO)ISO 8601 — Date and time format ↗
Hours-and-minutes civil time; decimal hours = h + m/60
Accessed 2026-08-19