To zoom in Excel, first select the cells you want to zoom. Then, on the View tab, in the Zoom group, click Zoom. In the Zoom dialog box, under Zoom to, click Selection. Then, click OK.
You can also zoom by using the mouse wheel. To do this, position the mouse pointer over the worksheet, and then scroll the wheel to zoom in or out.
If you want to return to the normal 100% view, on the View tab, in the Zoom group, click 100%.