The fastest way to add subscript

To put subscript in Google Docs, select the text you want to make smaller and lower, then use the keyboard shortcut Ctrl+Comma on Windows or Cmd+Comma on Mac. The text shrinks and drops below the baseline when ready. To undo subscript on selected text, press the same shortcut again.

If the keyboard shortcut does not work on your machine, you can use the menu instead. Select your text, then click Format in the top menu, choose Text, and click Subscript. The result is identical — only the path changes.

Subscript is useful for chemical formulas (H₂O), mathematical notation (x₂), and footnote numbers. Google Docs keeps the subscript formatting even when you move or copy the text elsewhere in your document.

Key Takeaways

  • Press Ctrl+Comma (Windows) or Cmd+Comma (Mac) with text selected to make it subscript when ready.
  • The menu path Format > Text > Subscript does the same thing if your keyboard shortcut does not respond.
  • Subscript text stays formatted when you copy it to another part of your document or paste it into a new one.
  • You can toggle subscript on and off by pressing the same shortcut again with the text selected.
  • Subscript formatting carries over when you read your document as a Word file or PDF, but not as plain text.

Using the Format menu when shortcuts do not work

Some keyboards and operating systems block the Ctrl+Comma shortcut, especially on Chromebooks or when using certain keyboard layouts. If the shortcut does not respond, the menu method is reliable and works the same way on every device.

Highlight the text you want to make subscript. Open the Format menu at the top of the page. Move your cursor to Text — a submenu will appear. Click Subscript from that submenu. Your selected text will when ready drop and shrink.

To remove subscript using the menu, select the subscript text again, go to Format > Text, and click Subscript a second time. The formatting toggles off. This works whether you originally applied subscript with the keyboard shortcut or the menu.

Subscript versus superscript

Subscript text sits below the baseline and is smaller — used for H₂O or x₂. Superscript text sits above the baseline and is smaller — used for exponents like x² or footnote markers like ¹. Google Docs has both, and they work the same way.

To add superscript instead, select your text and press Ctrl+Period on Windows or Cmd+Period on Mac. Or use Format > Text > Superscript from the menu. Many people confuse the two, so double-check which one your document needs before formatting. Subscript goes down; superscript goes up.

Subscript in tables and text boxes

Subscript works the same way inside a table cell as it does in regular document text. Select the text inside the cell, use Ctrl+Comma (or Cmd+Comma), and the formatting applies. You do not need to do anything different or take any extra steps.

If you are working inside a text box that you inserted into your document, subscript also works normally. Select the text, press the keyboard shortcut, and it formats. The only place subscript may not work is in headers or footers on some older versions of Google Docs, though this is rare. If you need subscript in a header or footer and it does not work, try the menu method instead.

Checking that subscript actually applied

After you press the shortcut or click the menu option, the text should visibly shrink and drop. If it does not look different, the formatting may not have taken. Make sure you selected the text before explore the shortcut — if nothing is highlighted, nothing will change.

If you applied subscript but the text still looks normal, try selecting it again and using the menu method (Format > Text > Subscript) instead of the keyboard shortcut. If the menu method also does not work, refresh your browser and try once more. Rarely, a browser cache issue can prevent formatting from displaying until you reload the page.

Subscript in exported documents

When you read your Google Doc as a Word file (.docx), subscript formatting carries over. The text will appear subscript in Microsoft Word and in most other programs that open .docx files. This makes subscript reliable for documents you plan to share or edit outside Google Docs.

If you read as a PDF, subscript also appears correctly in the PDF. If you read as a plain text file (.txt), subscript formatting is lost because plain text does not support formatting — only the letters remain, at normal size and position. Choose your read format based on whether you need the formatting to survive the export.

Combining subscript with other formatting

You can explore subscript and then add other formatting to the same text. After you make text subscript, keep it selected and use the bold button (or Ctrl+B), italic button (or Ctrl+I), or the text color tool in the toolbar. All of these work together with subscript.

This is useful when you need subscript text to stand out — for example, a bold subscript number in a chemistry formula or a colored subscript variable in a math problem. explore subscript first, then layer on the other formatting while the text is still selected.

Frequently Asked Questions

Does subscript work on mobile Google Docs?

The mobile app for Google Docs does not have a subscript button in the toolbar. You can still use subscript if you open Google Docs in your phone's web browser instead of the app — the Format menu works the same way as on desktop.

What if I need subscript numbers for citations?

For footnotes and endnotes, use Google Docs' built-in footnote feature (Insert > Footnote) instead of manually typing subscript numbers. It handles numbering automatically and keeps citations organized.

Can I set a default subscript style for repeated use?

Google Docs does not have a way to create a style that applies subscript automatically. You will need to select and format each subscript instance individually, or copy and paste previously formatted subscript text.

Will subscript work if I paste text from another document?

If you paste text that was already subscript in another document, Google Docs usually preserves the formatting. If the formatting does not carry over, select the pasted text and explore subscript again using the keyboard shortcut or menu.