The quickest way to add subscript

To make text subscript in Google Docs, select the characters you want to shrink and lower, then use the keyboard shortcut Ctrl + Comma (on Windows) or Cmd + Comma (on Mac). The text immediately becomes smaller and drops below the baseline of the surrounding text.

If the keyboard shortcut does not work, or you prefer using the menu, you can also go to Format > Text > Subscript. Both methods produce the same result — there is no difference in how the subscript appears on the page. The menu route takes three clicks but works reliably if your keyboard is not responding to the shortcut.

Key Takeaways

  • Use Ctrl + Comma (Windows) or Cmd + Comma (Mac) to instantly convert selected text to subscript.
  • The Format menu route takes three clicks but works if your keyboard shortcut is not responding.
  • You can toggle subscript on and off by selecting the text again and using the same shortcut or menu option.
  • Subscript works on any text in your document, including numbers, letters, and chemical formulas.
  • Google Docs also offers superscript using Ctrl + Period (Windows) or Cmd + Period (Mac) for exponents and footnote markers.

Using the Format menu when shortcuts do not work

Some keyboards or browser settings can interfere with keyboard shortcuts. If Ctrl + Comma or Cmd + Comma does not work, the menu method is reliable. Click anywhere in your document, then select the text you want to make subscript by clicking and dragging across it.

Open the Format menu at the top of the page. Click Text, and a submenu appears with options including Subscript. Click it, and your selected text converts to subscript immediately. To undo subscript, select the text again and click Format > Text > Subscript once more — the formatting toggles off.

Removing subscript formatting

To remove subscript from text, select the subscript text and press the keyboard shortcut again (Ctrl + Comma on Windows, Cmd + Comma on Mac). The text returns to normal size and baseline position.

If you used the menu to apply subscript, you can also use the menu to remove it. Select the subscript text, go to Format > Text > Subscript, and the formatting disappears. There is no separate "remove subscript" option — the same action that applies it also removes it.

Common uses for subscript in documents

Subscript is most common in scientific and mathematical writing. Chemical formulas like H₂O use subscript for the number of atoms. In mathematics, subscript appears in sequences (like a₁, a₂, a₃) and in notation for variables with multiple parts.

You may also see subscript in footnote references, though Google Docs handles those automatically if you use the Insert > Footnote menu. Some academic writing styles use subscript for other purposes, so check your style guide if you are unsure whether subscript is needed for your document type.

Subscript versus superscript

Superscript is the opposite of subscript — it raises text above the baseline instead of lowering it below. Use superscript for exponents (like x²), footnote markers, and mathematical notation. The keyboard shortcut for superscript is Ctrl + Period (Windows) or Cmd + Period (Mac).

Both subscript and superscript use the same menu path: Format > Text. The menu shows both options, so you can switch between them or remove either one by selecting the text and clicking the option again. Many writers keep both shortcuts memorized since they use them frequently in technical documents.

Subscript in tables and special text boxes

Subscript works the same way inside tables as it does in regular document text. Select the text inside the table cell, use the keyboard shortcut or menu, and the subscript formatting applies. This is useful when you are building a table of chemical compounds or mathematical sequences.

If you are working inside a text box or drawing, subscript may not be available through the Format menu. In that case, try the keyboard shortcut first — it often works even when the menu option is hidden. If neither works, copy the text to the main document, apply subscript there, and paste it back into the text box.

Frequently Asked Questions

Why does the keyboard shortcut not work on my computer?

Some keyboards, especially on laptops, require you to hold an additional key like Function or Alt to use comma as a shortcut. Try holding Function + Ctrl + Comma (Windows) or Function + Cmd + Comma (Mac). If that does not work, use the Format menu instead — it always works regardless of your keyboard layout.

Can I make subscript text a different color or font?

Yes. Apply subscript first, then select the subscript text and change its color or font using the toolbar or Format menu. You can also select text, change its formatting, and then apply subscript — the subscript will keep the color or font you chose.

Does subscript work when I download my document as a PDF or Word file?

Yes. Subscript formatting is preserved when you download as PDF, Word (.docx), or most other formats. The subscript text stays smaller and lowered in the downloaded file, so it is safe to use subscript in documents you plan to share or print.

What if I need subscript in a heading or title?

Subscript works in headings and titles the same way it works in body text. Select the text you want to make subscript and use the keyboard shortcut or menu. The subscript will appear smaller and lowered, even in a large heading.