Go to File > Options > Advanced. Scroll down to Display. Select the unit you want in Show measurements in units of. Select OK.
What is the unit of ruler in Microsoft Word?
In the United States, the default unit of measurement for the ruler, margins, and indents in Microsoft Word is inches. However, you can change that unit of measurement to centimeters, millimeters, points, or picas.
How do I change pt to mm in Word?
Changing the measurement system in Microsoft Word
Click Options. Click Advanced in the categories on the left. Scroll down to the Display group in the panel on the right. Beside Show measurements in units of, choose inches, centimeters, millimeters, points or pics from the drop-down menu.