Want to add calculator in Word's menus or toolbar

In Word 2007:-

1. Right-click the Quick Access toolbar and select Customize Quick Access Toolbar from the pop-up menu.

2. Make sure For All Documents is selected in the Customize Quick Access Toolbar drop-down box.

3. In the Choose Commands From drop-down box, select Commands Not In The Ribbon. (Side note: Perusing this list is highly educational for old-time Word users pining for lost commands.)

4.Locate Calculate in the list and double-click it to add it to the list of Quick Access commands, then click OK.

In Word XP/2003:-

1. Right-click any of your toolbars and choose Customize from the pop-up menu.

2. Click the Commands tab in the Customize dialog.

3. In the Categories list click Tools and in the Commands list scroll to Tools Calculate.

4. Click and drag the Tools Calculate command onto any of your toolbars.

5. To display a more compact icon, right-click the Tools Calculate button on the toolbar, select Change Button Image and pick the calculator icon.

Right-click the Tools Calculate button once more and select Default Style. Then click Close.