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Convertisseur d’heures en décimal

Convertissez heures et minutes en centièmes d’heure pour vos fiches de paie et factures.

H:MM → decimal hours

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

Decimal hours → H:MM

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

Comment ça marche

  1. H:MM → decimal is exact: minutes ÷ 60, so 7:30 is exactly 7.5. Seconds are included as fractions of a minute.
  2. 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.
  3. Total minutes are always listed too, the unit most timesheet grids actually use.

Bon à savoir

  • 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.
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Passez du format 24 heures au format 12 heures avec suffixes AM et PM.

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Convertissez dates et heures entre deux fuseaux IANA du monde.

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Foire aux 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.