Everyday Calculation

Free calculators and unit converters for general and everyday use.

Calculators » Date & Time » Decimal Time Conversion

Hours minutes seconds to decimal hour converter

Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can convert time values specified in hours, minutes and seconds to decimal hours and vice-versa.

Enter time value you want to convert from:

: :

Result window

Download: Use this time converter offline with our all-in-one calculator app for Android and iOS.


Each hour is divided into 60 minutes, each of which is further sub-divided into 60 seconds.

Hours and minutes to Decimal conversion

dh = hh + mm/60 + ss/3600

Decimal to hours and minutes conversion

hh = ⌊dh⌋
mm = ⌊(dh - hh) * 60⌋
ss = ((dh - hh) * 60 - mm) * 60
dh = decimal hour
hh = hours
mm = minutes
ss = seconds

© everydaycalculation.com