Everyday Calculation

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Calculators » Date & Time » HMS to decimal hours

Hour, minute, second and decimal hour Conversion

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, seconds (HMS) to decimal hours and vice-versa.

Enter time value you want to convert from:

h min s

Result window

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Methodology

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

HMS to decimal

hh = h + min/60 + s/3600

Decimal to HMS

h = ⌊hh⌋
min = ⌊(dd - h) * 60⌋
s = ((hh - h) * 60 - min) * 60
where,
hh = decimal hour
h = hours
min = minutes
s = seconds

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