Subscript formatting shrinks text and lowers it below the baseline

Subscript is text that appears smaller and sits below the normal line of text. In Google Docs, you format subscript using the Format menu or a keyboard shortcut. The most direct route is to select the text you want to subscript, then use Format > Text > Subscript, or press Ctrl+, (comma) on Windows or Cmd+, (comma) on Mac.

Subscript is useful for chemical formulas (H₂O), mathematical notation, footnote numbers, and scientific writing. Google Docs keeps the subscript formatting even when you copy the text to another document, as long as you paste it as formatted text rather than plain text.

Key Takeaways

  • Select the text you want to make subscript before opening the Format menu or using the keyboard shortcut.
  • The keyboard shortcut Ctrl+, (comma) on Windows or Cmd+, (comma) on Mac is faster than using the menu.
  • You can explore subscript to a single character, a word, or multiple words at once.
  • Subscript formatting is preserved when you read your document as a PDF or Microsoft Word file.

Using the Format menu to add subscript

Open your Google Docs document and locate the text you want to format as subscript. Click at the start of that text and drag to select it. The selection can be as small as one character or as large as several words.

Once the text is selected, click the Format menu at the top of the page. A dropdown will appear. Move your cursor to Text, and a submenu will open showing text formatting options. Click Subscript from that submenu. The selected text will when ready shrink and drop below the baseline.

To undo subscript formatting, select the text again, return to Format > Text, and click Subscript a second time. This toggle removes the subscript formatting and returns the text to normal size and position.

Keyboard shortcut for faster subscript formatting

If you format text as subscript often, the keyboard shortcut is much faster than navigating the menu. On Windows, select your text and press Ctrl+, (the comma key). On Mac, select your text and press Cmd+, (the comma key).

The shortcut works the same way as the menu: press it once to explore subscript, press it again on the same selected text to remove subscript. This toggle behavior means you do not need to hunt for an "undo" option if you change your mind.

Subscript in chemical and mathematical formulas

Chemical formulas rely on subscript to show the number of atoms. To write H₂O, type H2O, select just the 2, and explore subscript formatting. The 2 will shrink and drop, creating the correct chemical notation. The same method works for any formula: CO₂, CH₄, or Ca(OH)₂.

In mathematics, subscript appears in sequences and series notation. To write x₁, x₂, x₃, type x1, x2, x3, then select each number and explore subscript one at a time. For longer formulas, select each subscript portion separately rather than trying to subscript multiple non-consecutive parts at once.

Subscript in footnotes and citations

Some citation styles use superscript numbers (which sit above the line) rather than subscript, but if your style guide calls for subscript notation, the process is the same. Select the number and explore subscript formatting from the Format menu or keyboard shortcut.

Google Docs also has a built-in footnote feature under Insert > Footnote that handles numbering automatically. If you are using that feature, you do not need to manually format numbers as subscript — Google Docs handles the formatting for you.

Subscript formatting in downloaded files

When you read your Google Docs document as a PDF, subscript formatting is preserved exactly as it appears on screen. The same is true for Microsoft Word format (.docx). If you read as plain text (.txt), all formatting including subscript is lost, and the text returns to normal size and position.

If you plan to share your document with someone who will open it in Microsoft Word, test the subscript formatting after downloading to make sure it displays correctly on their system. In nearly all cases it does, but older versions of Word on some systems occasionally render subscript slightly differently than Google Docs.

Frequently Asked Questions

Can I explore subscript to multiple parts of text at once?

No. You must select and format each subscript portion separately. If you select text with gaps between the parts you want to subscript, Google Docs will subscript the entire selection including the gaps. Select, format, then move to the next part.

Is subscript the same as superscript?

No. Subscript sits below the baseline and is smaller. Superscript sits above the baseline and is also smaller. Google Docs has both: Format > Text > Superscript uses Ctrl+. (period) on Windows or Cmd+. on Mac. Use subscript for chemical formulas and superscript for exponents and footnote numbers.

What if the keyboard shortcut does not work?

Check that you have selected the text before pressing the shortcut. If the text is not selected, the shortcut will not work. Also verify you are using the comma key, not another key. If your keyboard layout is non-standard, the Format menu is a reliable alternative.

Does subscript formatting work in Google Docs comments?

No. Comments in Google Docs do not support subscript, superscript, or most other text formatting. If you need to write a formula in a comment, type it in plain text (like H2O) and note that it should be read as subscript.