Decimal hours converter
Convert hours and minutes to decimal hours, or turn decimal hours back into a clear hours-and-minutes format.
Convert hours, minutes and decimal hours
What the decimal hours converter shows
The decimal hours converter changes a time duration from hours and minutes into decimal hours and back again. It is useful when the same duration needs to be shown in two common time formats.
How to use the converter
Choose the conversion direction. To get decimal hours, enter hours and minutes in separate fields. To get hours and minutes, enter the decimal-hour value using either a decimal point or comma.
Hours and minutes to decimal hours
To convert hours and minutes into decimal hours, divide the minutes by sixty and add the result to the number of hours. For example, 7 hours and 30 minutes is 7 + 30 / 60 = 7.5 hours.
Decimal hours to hours and minutes
Decimal hours are converted back by multiplying the value by sixty. The result is rounded to the nearest minute and shown as hours and minutes. For example, 7.75 hours is 7 hours and 45 minutes.
Examples
- 7 h 30 min = 7.5 h.
- 7 h 45 min = 7.75 h.
- 1 h 15 min = 1.25 h.
- 2.5 h = 2 h 30 min.
When the converter is useful
The converter helps with time tracking, invoicing, project tracking, training times and personal tracking. It is handy whenever a duration needs to be expressed both as hours and minutes and as a decimal number.
Limitations
The converter performs only a mathematical time conversion. It does not apply system-specific rounding rules, recording rules or local workflow rules. Check any rules separately if you use the result in another system.
FAQ
Why is 30 minutes 0.5 hours?
Because one hour has 60 minutes. 30 minutes is 30 / 60, which equals 0.5 hours.
Can I use a comma as the decimal separator?
Yes. The decimal-hours field accepts both a point and a comma, for example 7.75 or 7,75.
How are decimal hours rounded?
When decimal hours are converted back to hours and minutes, the calculator rounds the result to the nearest minute.