https://www.indezine.com/products/powerpoint/learn/textandfonts/2016/resize-text-boxes-accurately.html

Note: Do you see the Width and Height values in centimeters rather than inches? That's not an issue since you will either see centimeters or inches everywhere in PowerPoint. However, if you want to change the unit of measurement, you will have to do that globally in your Microsoft Windows operating system. The following tutorials will help you:

Change the Unit of Measurement in Windows 10
Change the Unit of Measurement in Windows 8
Change the Unit of Measurement in Windows 7
Change the Unit of Measurement in Windows Vista
Change the Unit of Measurement in Windows XP

Change the Unit of Measurement in Windows 10

Essentially, the unit of measurement used by Microsoft Windows 10 is determined by settings in place within the Regional Settings applet within the Control Panel. Choices available are U.S. and Metric. In this tutorial, we'll show you how you can change the units from U.S. to Metric, or vice versa.

控制面板找到语言和区域，高级里面设置。

标签：cm,Windows,PPT,will,宽度,Change,Measurement,centimeters,Unit
来源： https://www.cnblogs.com/chucklu/p/16293763.html