The formula bar is a feature in Microsoft Excel that enables users to create and view formulas. It is typically labeled with a function symbol (fx), and it is sometimes referred to as the formula box.
The formula bar is automatically activated when it is clicked or when an equal sign is typed in a cell. Formulas refer to equations that compute calculations based on the values entered in the spread sheet.
A simple formula can be created using calculation operators and constants. A formula must include a cell reference. An example of a simple formula is =B2+B3. More complex formulas contain functions; for example, =SUM(B2:B3).