Decimal hours calculator
Convert hours and minutes to decimal hours, and decimal hours back to hours and minutes.
Not legal, tax or payroll advice. General information only; results are estimates. Read the full notice.
Examples: 7 hours 45 minutes is 7.75 decimal hours. 7.75 decimal hours is 7 h 45 min.
Estimate based on what you entered. Not legal or payroll advice; check it against your employer's records.
How to use it
- To get decimal hours, type the hours and minutes in Hours and minutes to decimal hours.
- To go the other way, type decimal hours like 7.75 in Decimal hours to hours and minutes.
- For decimal hours, pick how many decimal places to show.
The arithmetic
Decimal hours = hours + (minutes / 60). Minutes = (decimal part of the hours) x 60. A one-page reference is on the printable decimal hours chart. To convert only minutes, use minutes to decimal hours.
Questions
What are decimal hours?
Decimal hours write part of an hour as a decimal instead of minutes. 7 hours 45 minutes is 7.75 hours, because 45 minutes is 45 divided by 60, or 0.75 of an hour.
How do I convert hours and minutes to decimal hours?
Divide the minutes by 60 and add the result to the hours. For 7 hours 45 minutes: 45 / 60 = 0.75, so 7.75.
How do I convert decimal hours back to hours and minutes?
Multiply the part after the decimal point by 60. For 7.75: 0.75 x 60 = 45 minutes, so 7 hours 45 minutes.
Why does 7:30 not equal 7.30?
In 7:30 the 30 is minutes, and 30 minutes is half an hour, or 0.50. In 7.30 the 30 is hundredths of an hour. So 7:30 is 7.50 in decimal hours.
Why are some decimals rounded?
Most minutes do not divide evenly into an hour. 50 minutes is 0.8333... of an hour, so the calculator rounds to the number of decimal places you pick.