Enter m2 in Word first, then select "2" with the mouse, select "Font" in the format of the menu bar, check "superscript" to be valid in the pop-up font dialog box, and then confirm.

Use the shortcut "superscript", first select "2" with the cursor and then press CTRL+Shift+“+”+++on the keyboard (click Yes, press Cancel repeatedly and press Ctrl+ "subscript). ?

3. Press and hold the Alt key on the keyboard, then press the number key "0 178", and then release the Alt key, and the square meter symbol will come out. It's amazing, you can try it if you don't believe it. Use special symbols to complete the square meter symbol input. Click "Special Symbol" in the menu bar "Insert", select "Unit Symbol" in the pop-up "Insert Special Symbol", and then find the square meter symbol in it.