Convert conventional watch time into decimal hours or convert decimal hours back into hours, minutes and seconds.
A normal clock divides an hour into 60 minutes and each minute into 60 seconds. Decimal hours express the same time using a decimal fraction of an hour.
To convert conventional time into decimal hours, keep the whole hours and convert minutes and seconds into fractions of an hour.
The number before the decimal point represents complete hours. The decimal portion is multiplied by 60 to find minutes. Any remaining fractional minute is converted into seconds.
What is decimal time? Decimal time expresses hours using a decimal fraction instead of separating the time into hours, minutes and seconds.
How do you convert time to decimal hours? Divide minutes by 60, divide seconds by 3600, then add both results to the whole hours.
What is 30 minutes in decimal hours? 30 minutes equals 0.5 decimal hours.
What is 15 minutes in decimal hours? 15 minutes equals 0.25 decimal hours.
What is 45 minutes in decimal hours? 45 minutes equals 0.75 decimal hours.
What is 12:30 in decimal hours? 12:30 equals 12.5 decimal hours.