How to Add Subscript Text in Google Docs

Subscript puts text below the baseline in Google Docs

Subscript is text that sits slightly below the normal line of writing. In Google Docs, you can format subscript in three ways: using the Format menu, using a keyboard shortcut, or using the special characters tool. The Format menu is the most straightforward route if you are not sure where to start. The keyboard shortcut is fastest once you know it. The special characters tool works when you need a specific symbol that may not exist as regular text.

Subscript is useful for chemical formulas (like H₂O), mathematical notation, footnote markers, and scientific writing. Google Docs treats subscript as a text formatting option, the same way it treats bold or italic — you select the text first, then apply the format.

Key Takeaways

Select the text you want to make subscript, then go to Format > Text > Subscript to apply the formatting in one step.
On Windows, press Ctrl+Comma to turn selected text into subscript; on Mac, press Cmd+Comma.
Subscript formatting stays with the text even if you copy and paste it into another part of your document.
You can undo subscript formatting by selecting the text again and clicking Format > Text > Subscript a second time, or by using the keyboard shortcut again.

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 text will highlight in blue. Make sure you have selected only the characters you want to appear below the baseline.

Once the text is selected, click the Format menu at the top of the page. A dropdown will appear. Move your mouse to Text and another submenu will open. Click Subscript. The selected text will immediately shift below the baseline and become slightly smaller. The formatting is now applied and will remain even if you click elsewhere in the document.

Using the keyboard shortcut for faster formatting

If you format subscript often, the keyboard shortcut is much faster than the menu route. Select the text you want to format, then press Ctrl+Comma on Windows or Cmd+Comma on Mac. The text will convert to subscript instantly.

This shortcut works the same way every time — select, then press the keys. If you accidentally apply subscript to the wrong text, select it again and press the same shortcut to remove the formatting. The shortcut toggles subscript on and off.

Removing subscript formatting

To remove subscript from text, select the text that is currently in subscript format. Then either go to Format > Text > Subscript again, or press Ctrl+Comma (Windows) or Cmd+Comma (Mac). The text will return to normal size and position on the baseline.

You can also select a larger block of text that contains subscript and apply the subscript command to the whole selection — only the text that is already subscript will toggle back to normal, and any regular text in the selection will become subscript. This can be confusing, so it is safer to select only the subscript text you want to change.

Subscript in chemical and mathematical formulas

Subscript is standard in chemistry and math writing. For a chemical formula like H₂O, select only the "2" and apply subscript formatting. For an equation like x₁ + x₂ = y, select each number separately and format each one as subscript. Google Docs will keep the subscript formatting in place as you type around it.

If you are writing a long document with many subscript numbers or symbols, formatting each one individually takes time. Consider whether a template or a document you have already formatted might save you work if you plan to reuse the same formulas.

Subscript versus superscript

Superscript is the opposite of subscript — it sits above the baseline instead of below. In Google Docs, superscript uses the same menu path (Format > Text > Superscript) or the keyboard shortcut Ctrl+Period on Windows or Cmd+Period on Mac. Superscript is used for exponents (x²), footnote numbers, and ordinal indicators (1st, 2nd).

Do not confuse the two. If you need text below the line, use subscript. If you need text above the line, use superscript. Google Docs keeps them separate, so applying one will not affect the other.

Subscript in shared documents and exports

When you share a Google Docs document with others, subscript formatting shows up correctly for anyone who views the document in Google Docs. If you download the document as a Word file (.docx), subscript formatting usually transfers correctly, though the exact appearance may vary slightly depending on the fonts installed on the other person's computer.

If you export as a PDF, subscript will display as intended. If you copy text from Google Docs and paste it into another program (like email or a web form), subscript formatting may or may not survive the paste — it depends on whether the destination program supports text formatting. Plain text destinations will lose the subscript formatting and show the text at normal size.

Frequently Asked Questions

Can I make subscript text a different color or font?

Yes. Select the subscript text and use the text color or font tools in the toolbar the same way you would for any other text. The subscript formatting stays in place while you change the color or font. You can also select text, apply a color or font, and then apply subscript — the order does not matter.

Does subscript work on mobile Google Docs?

The mobile app for Google Docs has limited formatting options. On iPhone or Android, you can view subscript that was already applied on a computer, but the mobile app does not have a subscript button in the toolbar. To add subscript on mobile, use a computer or access Google Docs through a mobile web browser where the full Format menu is available.

What if the subscript text looks too small to read?

Subscript is always smaller than regular text — that is how the format works. If readability is a problem, consider whether a different approach might work better, such as writing "H2O" with a note that the 2 is subscript, or using parentheses like "H(2)O". You can also increase the overall font size of your document, which will make the subscript larger as well.

Can I use subscript in Google Docs headers or footers?

Yes. Click into the header or footer area, select the text you want to format, and apply subscript the same way you would in the main document body. The Format menu works the same in headers and footers as it does elsewhere.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.