Excel Formulas Excel's formulas enable you to perform basic mathematical calculations. To create a formula, start by typing the equals (=) sign, and then create the parameters for the calculation.

Microsoft Excel gives users the flexibility to configure data and perform very basic operations, such as addition, subtraction, multiplication, or division by using shortcuts or custom formulas. This ...

Excel provides two options for calculating the difference between two times. If you use a simple subtraction operation such as "=C1-A1," select the custom format "h:mm" from the Format Cells options.