Subscript puts text below the baseline in Word

Subscript is a formatting tool that moves selected text below the normal line of text, making it smaller. In Microsoft Word, you use subscript most often for chemical formulas (H₂O), mathematical expressions, or footnote markers. The text stays in your document — you are not creating a separate element or link.

Word offers three ways to apply subscript: a keyboard shortcut (fastest), the Format menu, or the Home tab ribbon. All three produce the same result. The method you choose depends on whether you are working on a desktop version of Word, Word Online, or a Mac.

Key Takeaways

  • The keyboard shortcut Ctrl+= (Windows) or Cmd+= (Mac) applies subscript instantly to any selected text.
  • You can also use the Format menu: select text, then Format > Text > Subscript.
  • On the Home tab ribbon, the subscript button sits in the Font group next to the superscript button.
  • Subscript formatting stays with the text if you copy and paste it to another location in the same document or to a different document.
  • Word Online has subscript in the Home tab, but the keyboard shortcut does not work the same way as the desktop version.

Using the keyboard shortcut on Windows

The fastest method on Windows is the keyboard shortcut. Select the text you want to make subscript, then press Ctrl and the equals sign (=) at the same time. Hold both keys down for one second, then release. The selected text immediately moves below the baseline and becomes smaller.

If you need to type subscript as you go rather than selecting text afterward, press Ctrl+= first, then type the characters you want in subscript. Everything you type will be subscript until you press Ctrl+= again to turn it off. This toggle method works the same way as bold or italic.

Using the keyboard shortcut on Mac

On a Mac running Word, the subscript shortcut is Cmd+= (the equals sign on the main keyboard, not the numeric keypad). Select your text first, then hold Cmd and press =. Release both keys. The text formatting changes immediately.

The toggle method works on Mac the same way it does on Windows: press Cmd+= to turn subscript on, type what you need, then press Cmd+= again to turn it off. This is useful when you are typing a chemical formula or mathematical expression and do not want to select text afterward.

Applying subscript from the Home tab ribbon

If you prefer using the ribbon interface, select the text you want to format. On the Home tab, look for the Font group. You will see an "A" with a small "x" below it — that is the subscript button. Click it once, and your selected text becomes subscript.

The subscript button sits right next to the superscript button (an "A" with a small "x" above it), so make sure you click the correct one. If you click the wrong button by mistake, click it again to undo, or use Ctrl+Z to undo the formatting.

Using the Format menu

Select the text you want to format. Click the Format menu at the top of the window. From the dropdown, select Text, then Subscript. The formatting applies immediately to your selection.

This method takes more clicks than the keyboard shortcut or ribbon button, but it is useful if you are not sure where the subscript button is on your version of Word or if you prefer menu navigation.

Subscript in Word Online

Word Online has subscript formatting, but the keyboard shortcut does not work the same way as the desktop version. Select your text, then click the Home tab. In the Font group, click the subscript button (the "A" with a small "x" below it). The formatting applies to your selection.

Word Online does not support the Ctrl+= toggle method for typing subscript as you go. You must select text first, then apply the formatting. If you need to type a lot of subscript text, the desktop version of Word is faster.

Removing subscript formatting

To remove subscript formatting, select the text that is currently in subscript. Press Ctrl+= (Windows) or Cmd+= (Mac) again, and the formatting turns off. The text returns to normal size and baseline position.

You can also use the ribbon button or Format menu to toggle subscript off. Select the subscripted text and click the subscript button again, or go to Format > Text > Subscript. Any of these methods will undo the subscript formatting.

Frequently Asked Questions

Can I make subscript text a different color or font?

Yes. Apply subscript formatting first, then select the subscripted text again and change the color, font, or size using the same tools you would use for normal text. The subscript position stays in place while you change other formatting.

Does subscript formatting copy to other programs?

When you copy subscript text from Word and paste it into another program like Google Docs or email, the subscript formatting usually stays if you paste as formatted text. If you paste as plain text, the formatting is lost and the text returns to normal baseline position.

What if the keyboard shortcut is not working?

Make sure you are pressing the equals sign on the main keyboard, not the numeric keypad. If it still does not work, try the ribbon button or Format menu instead. Some keyboard layouts or accessibility settings can interfere with the shortcut.

Can I use subscript in headers or footers?

Yes. Click inside the header or footer area, select your text, and apply subscript the same way you would in the document body. The formatting works in headers, footers, and text boxes.