You can use formulas in Excel and other spreadsheet programs to add, subtract, multiply, and divide. Use simple Excel formulas to also make cell references.
To create a formula using the point-and-click method:
Rather than typing cell addresses manually, you can point and click on the cells you want to include in your formula. This method can save a lot of time and effort when creating formulas. In our example below, we'll create a formula to calculate the cost of ordering several boxes of plastic silverware.
- Select the cell that will contain the formula. In our example, we'll select cell D3.
Selecting cell D3
- Type the equals sign (=).
- Select the cell you want to reference first in the formula: cell B3 in our example. The cell address will appear in the formula, and a dashed blue line will appear around the referenced cell.
Referencing cell B3
- Type the mathematical operator you want to use. In our example, we'll type the multiplication sign (*).
- Select the cell you want to reference second in the formula: cell C3 in our example. The cell address will appear in the formula, and a dashed red line will appear around the referenced cell.
Referencing cell C3
- Press Enter on your keyboard. The formula will be calculated, and the value will be displayed in the cell.
The completed formula and calculated value
Formulas can also be copied to adjacent cells with the fill handle, which can save a lot of time and effort if you need to perform the same calculation multiple times in a worksheet. Review our lesson on Relative and Absolute Cell References to learn more.
Copying a formula to adjacent cells using the fill handle
To edit a formula:
Sometimes you may want to modify an existing formula. In the example below, we've entered an incorrect cell address in our formula, so we'll need to correct it.
- Select the cell containing the formula you want to edit. In our example, we'll select cell B3.
Selecting cell B3
- Click the formula bar to edit the formula. You can also double-click the cell to view and edit the formula directly within the cell.
Selecting a formula to edit
- A border will appear around any referenced cells. In our example, we'll change the second part of the formula to reference cell B2 instead of cell C2.
The misplaced cell reference
- When you're finished, press Enter on your keyboard or click the checkmark in the formula bar.
Editing a formula
- The formula will be updated, and the new value will be displayed in the cell.
The newly calculated value
If you change your mind, you can press the Esc key on your keyboard to avoid accidentally making changes to your formula.
To show all of the formulas in a spreadsheet, you can hold the Ctrl key and press ` (grave accent). The grave accent key is usually located in the top-left corner of the keyboard. You can press Ctrl+` again to switch back to the normal view.