To calculate the difference between the "Clock In" time and "Clock Out" time, type the equals sign (=) in the cell below the "Total Hours" label (C2), click on the "Clock Out" cell to the left ...

Type the formula to add all double time hours for the week in cell J2. For example, use the formula:=SUM (B5:H5) Type the formula in cell K2 to calculate overtime hours for the week.