# Time to Hours Calculator

Convert time to hours by entering the hours, minutes, and seconds below. Use the calculator to convert a time or duration in HH:MM:SS to hours or to convert minutes or seconds to hours.

## On this page:

## How to Convert Time & Duration to Hours

To convert a time to hours only, use a simple formula:

hours = hours + (minutes ÷ 60) + (seconds ÷ 3600)

**For example,** convert 12:45:00 to hours.

hours = 12 + (45 ÷ 60) + (00 ÷ 3600)

hours = 12 + .075 + 0

hours = 12.75

You might also like our time to decimal calculator.