How to Add Payroll Hours & Minutes in Excel. ... If you need to add a number of payroll time entries together, ... so that if you entered "8:30," "8.5" would display in this cell.

For example, if you simply type "1:30" into Excel, the software will assume you mean one hour and 30 minutes. If you enter 1:30:50 to add an extra 50 seconds, Excel will understand this too ...