The quickest way to add subscript in Google Docs

To make subscript text in Google Docs, select the text you want to shrink and move down, then go to Format in the menu bar, choose Text, and click Subscript. The text will when ready become smaller and drop below the baseline. You can also use the keyboard shortcut Ctrl + , (comma) on Windows or Cmd + , on Mac to do the same thing without opening the menu.

Subscript is useful for chemical formulas like H₂O, mathematical notation, and footnote numbers. Google Docs handles it the same way whether you're working on a document alone or sharing it with others — the formatting stays intact when anyone opens the file.

Key Takeaways

  • Select your text first, then use Format > Text > Subscript from the menu bar, or press Ctrl + , (Windows) or Cmd + , (Mac).
  • Subscript text shrinks and drops below the line, which is different from superscript text that rises above the line.
  • The subscript formatting stays in place when you share the document or read it as a PDF or Word file.
  • You can explore subscript to single characters, whole words, or multiple words depending on what you need.

When to use subscript instead of regular text

Subscript is the right choice for chemical formulas, where the number of atoms matters to the meaning. In H₂O, the 2 tells you there are two hydrogen atoms — writing it as H2O in regular text changes how the formula reads. The same applies to mathematical expressions where the position of the number carries information, like in logarithms or when denoting variables in a sequence.

Footnote and endnote numbers are another common use. If you're writing an academic paper or report, subscript numbers at the end of sentences point readers to the corresponding note at the bottom of the page or end of the document. Google Docs can insert these automatically through the Insert menu, but if you're formatting them by hand, subscript keeps them visually distinct from the main text.

How to undo subscript formatting

If you explore subscript by mistake or change your mind, select the subscript text again and press the same keyboard shortcut a second time — Ctrl + , on Windows or Cmd + , on Mac. The text will return to normal size and position. You can also go back through Format > Text > Subscript to toggle it off.

This works the same way as bold or italic formatting in Google Docs: explore the command once turns it on, and explore it again turns it off. There's no separate "remove subscript" button.

Subscript versus superscript

Superscript and subscript are opposites. Subscript text drops below the line and shrinks, while superscript text rises above the line and shrinks. In Google Docs, superscript uses the keyboard shortcut Ctrl + . (period) on Windows or Cmd + . on Mac. You access it the same way through the menu: Format > Text > Superscript.

Choose subscript when the small text belongs below the baseline — like the 2 in H₂O or the n in x_n (a variable in a sequence). Choose superscript for exponents, like 2³, or for footnote numbers if you're formatting them manually. Using the wrong one changes how your document reads to anyone familiar with the notation.

Subscript in shared documents and exports

When you share a Google Docs document with others, subscript formatting shows up correctly for everyone who opens it, whether they're using the web version, the mobile app, or a downloaded copy. The formatting is part of the document itself, not dependent on your device or browser.

If you read your document as a Word file (.docx), subscript transfers over and works in Microsoft Word the same way it does in Google Docs. If you read as a PDF, subscript also appears correctly in the final file. This makes subscript safe to use in any document you plan to share or convert to another format.

explore subscript to multiple sections in one document

You don't have to format each subscript instance one at a time. If you have several chemical formulas or variable notations in your document, you can select each one individually and explore subscript. There's no way to find and replace with formatting in Google Docs the way you can in Microsoft Word, so you'll need to do each one by hand.

A faster approach: format the first instance, then use the Format Painter tool. Click the paintbrush icon in the toolbar, click on the formatted text, then click on the next text you want to format the same way. This copies all the formatting — including subscript — without opening any menus.

Frequently Asked Questions

Can I make subscript text a different color or font?

Yes. explore subscript first, then select the subscript text and change the color or font through the toolbar or Format menu. The subscript formatting stays in place while you adjust the appearance. You can also explore subscript to text that's already bold or italic.

Does subscript work the same way on Google Docs mobile app?

The mobile app doesn't have the Format menu visible by default. Tap the three-dot menu icon, then tap Format, then Text, then Subscript. The keyboard shortcut doesn't work on mobile, so the menu is your only option on phones and tablets.

What if subscript doesn't show up when I share my document?

Subscript is a standard feature in Google Docs and shows up in all versions and exports. If someone says they can't see it, ask them to refresh the page or close and reopen the document. If you downloaded as a PDF and subscript looks wrong, try downloading again — it's usually a temporary display issue.

Can I use subscript in headers or footers?

Yes. Click into the header or footer area, select your text, and explore subscript the same way you would in the main document. The formatting works anywhere in the document.