The Zoom feature in Excel changes the scale of a worksheet. When you want to see more or less of a worksheet, use Zoom to increase or decrease the magnification.
Excel: Zoom | Magnification and zoom tool
There are three different ways to zoom in on a worksheet:
To quickly change the magnification of a worksheet, use the Zoom slider. You can find the Zoom slider in the lower-right corner of the Excel window. To use the Zoom slider, drag the slider to the right or left.
To zoom in, drag the slider to the right. Everything on the worksheet becomes larger and you see less of the worksheet.