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# Insert an equation with Equation Editor

Some of the content in this topic may not be applicable to some languages.

To document a formula on your spreadsheet, you can insert an equation as an object by using Equation Editor.

- Click where you want to insert the equation.
- On the
**Insert**menu, click**Object**, and then click the**Create New**tab. - In the
**Object type**box, click**Microsoft Equation 3.0**.

If Microsoft Equation Editor is not available, you may need to install it.

- Quit all programs.
- Do one of the following:
- On Microsoft Windows 2000, double-click the
**Add/Remove Programs**icon in Control Panel. - On Microsoft Windows XP, click
**Add or Remove Programs**in Control Panel. - In the
**Currently installed programs**box, click the listing for Microsoft Office or Microsoft Excel, depending on whether you installed Excel as part of Office or as an individual program, and then click**Change**. - On the
**Maintenance Mode Options**screen, click**Add or Remove Features**, and then click**Next**. - If a
**Custom Setup**screen appears, select the**Choose advanced customization of applications**check box, and then click**Next**. - In the list of features to install, click the expand indicator (+) next to
**Office Tools**. - Click the arrow next to
**Equation Editor**, and then click**Run from My Computer**. - Click
**Update**. - Restart Excel.

- Click
**OK**. - Build the equation by selecting symbols from the
**Equation**toolbar (toolbar: A bar with buttons and options that you use to carry out commands. To display a toolbar, press ALT and then SHIFT+F10.) and by typing variables and numbers. From the top row of the**Equation**toolbar, you can choose from more than 150 mathematical symbols. From the bottom row, you can choose from a variety of templates or frameworks that contain symbols such as fractions, integrals, and summations.

If you need help, click **Equation Editor Help Topics** on the **Help** menu.

- To return to Microsoft Excel, click on an empty cell.

Applies to:

Excel 2003