Decimal hours converter

Turn clock times like 7:45 into decimal hours — or decimals back into h:mm — for timesheets.

Convert

Calculated in this browser. Nothing is sent anywhere.

Clock input reads hours and minutes — “90:30” means 90 hours 30 minutes, not 90 minutes. Seconds can include decimals. Negative durations and values over 100,000 hours are rejected; rounding to the nearest minute happens only in the h:mm column.

How to use

  1. Pick the conversion direction.
  2. Enter the clock time or decimal value.
  3. Read the converted figures.

What it supports

Reads h:mm and h:mm:ss (fractional seconds allowed) up to 100,000 hours; decimals convert back to a nearest-minute h:mm plus an exact h:mm:ss. Negative durations are rejected.

Related tools

Related guides