Learn how to use basic Formulas for mathematical operations & insert Functions like sum, average, count, max, min, date, time, etc. in Excel.

The Autosum function can be used to add or sum Time in Microsoft Excel. You can add hours and calculate the total time in Excel.

You can't use a SUM() function to sum a filtered list, unless you intend to evaluate hidden and unhidden values. Here's how to sum only the values that meet your filter's criteria.