What is a formula that subtracts two times and gives me the result in decimal format? Eg: Column A has time in a two decimal format ie 12pm is entered as 12.00, Column B has time the same format ie 4.30pm is entered as 4.30 and column C is column A minus Column B ie 12.00 - 4.30 = 4.5hrs. These columns represent a start time and a finish time and I want to calculate the amount of time spent in a decimal format ie: 1.2 hours etc so I can add up time spent on different projects.

Thanks alot