Things You'll Need

Instructions

1

Multiply the time in the decimal hour form by 60 to calculate minutes. For example, if the time is 3.62 hours then 3.62 hours x 60 = 217.2 minutes.
2

Identify the decimal part in the time interval expressed in minutes. In the example, the decimal part of 217.2 minutes is 0.2.
3

Multiply the decimal part by 60 to calculate seconds. In the example, 0.2 x 60 = 12 seconds. Thus, 3.62 hours correspond to 217 minutes and 12 seconds.
4

Multiply the time in hours by 3,600 to calculate it in seconds. In that example, 3.62 hours x 3,600 = 13,032 seconds.