Easy way to calculate time difference in Excel using simple logic. A simple formula to calculate difference between two dates & times in Excel.

How to Calculate the Total Hours Formula in Excel. As a spreadsheet software program, Microsoft Excel has many useful features for a small business's productivity.

Type the formula in cell K2 to calculate overtime hours for the week. This formula will test to see if the total hours worked that week, minus the total double time hours, is greater than 40.

To calculate in Excel how many hours someone has worked, you subtract the start time from the end time — the difference is the hours worked.