Degrees, Minutes, and Seconds – Decimalise Example


If you are calculating the time you will arrive at your destination, you would use the Speed, Distance, Time formula.

To enable the use of a calculator we must convert the minutes (or seconds as per the example) to a decimal.

Once calculated, the navigator would not say, “We will arrive in 3.5 hours, so we convert the .5 back into hours (or seconds).

Example 1: Show 30 seconds as a decimal of a minute

Method: divide seconds by 60

30 / 60 = 0.5 minutes

To convert decimal minutes back to seconds, multiply the decimal by 60

0.5 x 60 = 30 seconds

Example 2: Convert 40 seconds to a decimal of a minute

Method: Divide 40 seconds by 60

40 / 60 = 0.66 or 0.7 minutes


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