The zoom level in a Microsoft Word can be changed in different ways. The Zoom options are available as part of Zoom section under View menu. Listed below are are different ways to change zoom level in Word 2013 and Word 2010
Clicking the Zoom button will display the following Zoom.
You can change the zoom level of the document to different pre-configured values (200%, 100% , 75%) or specify custom value using the Percent option. Similarly if you have selected Multiple Pages option and want to specify the number of pages to displayed on the window then use the Many Pages radio button.
If you want to quickly adjust the zoom level to 100% or change to One Page or increase Page Width to match the Window size then use the respective option available as part of Zoom section.
The quickest way to adjust zoom settings in Word 2013 is by using the the Zoom Slider Option available as part of Status bar.
If the status bar is not showing the Zoom Option then right click on Status bar and select Zoom Slider from the list.
Demo Video – Changing Zoom level in Word 2010
Demo Video – Changing Zoom level in Word 2013