TimeSheet Calculator - Version 3.51 TimeSheet Calculator consists of a pair of utilities that calculate time. The first tool is a simple time calculator that allows you to add or subtract hours, minutes and seconds. If you use a standard calculator to add up your time, you'll have to convert minutes to decimals, perform the calculation, then convert the result back to minutes. You just enter your hours and minutes, and the rest is done for you. The second tool is excellent for employees who have to maintain time sheets every day. Using a built-in punch clock, you enter the times that you start and finish work. TimeSheet maintains a grand total of the hours you're clocked in. The program displays your punch times for the current day and will even calculate your payrate including a customized overtime formula. TimeSheet then calculates your regular salary, overtime earnings and total earnings.