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Decimal Hours Converter

Convert 7:30 to 7.5 decimal hours in both directions.

H:MM → decimal hours

Hours and minutes

Colon format H:MM or H:MM:SS; durations over 24 h supported (e.g. 40:30).

Decimal hours → H:MM

Decimal hours

Fractions like 7.5, 7.75 or 7.333, rounded to the nearest minute.

How it works

H:MM → decimal is exact: minutes ÷ 60, so 7:30 is exactly 7.5. Seconds are included as fractions of a minute.
Decimal → H:MM multiplies out to minutes and rounds to the nearest whole minute (0.5 rounds up); the exact value is shown beside the rounded one so nothing is silently lost.
Total minutes are always listed too, the unit most timesheet grids actually use.

Good to know

Payroll systems want decimals because they multiply cleanly by hourly rates; timesheets are read as H:MM but billed in decimals.
Values are non-negative durations; negative or invalid inputs are rejected rather than wrapped.
For a full shift with breaks, the Work Hours Calculator computes gross and net directly.

Work Hours Calculator

Shift hours with break subtraction, overnight support, and net/gross split.

Time Duration Calculator

Duration between two times with automatic overnight span handling.

24-Hour to 12-Hour Converter

Convert 24-hour times like 14:30 into AM/PM format.

Time Zone Converter

Convert a time between any IANA time zones with DST handled for the date.

Frequently asked questions

Why do payroll systems want decimal hours?

Decimals multiply cleanly by hourly rates: 7.5 hours × $20 is simple, while 7:30 is not. Timesheets use H:MM but billing uses decimals.

How are fractional minutes handled going decimal → H:MM?

Rounded to the nearest whole minute (0.5 rounds up). The exact value is displayed next to the rounded one, so nothing is silently lost.

Is 7:30 exactly 7.5?

Yes, this direction is exact: minutes ÷ 60. The other direction can involve rounding, which is why the converter always displays both formats.