LachelleMerryweather1962.blogspot.com - https://LachelleMerryweather1962.blogspot.com. From the text below, you can learn how to calculate the time difference on your own. To calculate hours worked or sum up a group of time intervals, use our timesheet calculator. The input provided can either be in whole numbers or decimal, but they should be positive rational numbers. The value entered in the first row of the input section can either be greater or smaller than the value entered in the second r...