Subscript in Excel puts text or numbers below the baseline of regular text
Subscript is a formatting tool that shrinks and lowers text or numbers so they sit below the line of regular text. In Excel, you use it most often for chemical formulas (H₂O), mathematical notation (x₂), or footnote markers. The text stays in the same cell — you are not creating a separate note or comment.
Excel does not have a dedicated subscript button on the ribbon like some other programs do. Instead, you format subscript through the Format Cells dialog or by using a keyboard shortcut. The shortcut is faster if you are doing this repeatedly.
Key Takeaways
- The keyboard shortcut for subscript in Excel is Ctrl+= (hold Ctrl and press the equals sign) on Windows, or Cmd+= on Mac.
- You can also reach subscript through Format Cells by right-clicking a cell, selecting Format Cells, going to the Font tab, and checking the Subscript box.
- Subscript formatting only affects how the text displays — the actual cell value and any formulas remain unchanged.
- You must select the specific text or numbers within a cell before applying subscript; you cannot subscript an entire cell at once.
- To remove subscript, select the formatted text again and press the same keyboard shortcut a second time, or uncheck the Subscript box in Format Cells.
Using the keyboard shortcut to format subscript
The fastest way to apply subscript is the keyboard shortcut. On Windows, select the text or numbers you want to subscript inside the cell, then hold Ctrl and press the equals sign (=). On Mac, use Cmd and the equals sign instead. The text immediately shrinks and drops below the baseline.
To use the shortcut, you must be in edit mode inside the cell. Double-click the cell to enter edit mode, then highlight the characters you want to subscript. Once they are selected, press Ctrl+= (Windows) or Cmd+= (Mac). If you press the shortcut again on the same text, it removes the subscript formatting.
This method works in all versions of Excel on Windows and Mac. The shortcut is the same whether you are using Excel 2016, Excel 2019, Excel 365, or any recent version.
Using the Format Cells dialog to apply subscript
If the keyboard shortcut does not work on your keyboard layout or you prefer using the menu, you can format subscript through the Format Cells dialog. First, double-click the cell to enter edit mode and select the text or numbers you want to subscript.
Right-click the selected text and choose Format Cells from the menu. The Format Cells dialog opens. Click the Font tab if it is not already selected. Look for a Subscript checkbox in the Effects section and click it to turn subscript on. Click OK to apply the formatting.
You can also reach Format Cells by pressing Ctrl+1 (Windows) or Cmd+1 (Mac) after selecting your text. This opens the dialog without needing to right-click.
When subscript stays in place and when it does not
Subscript formatting is tied to the text itself, not to the cell. If you copy a cell with subscript text and paste it into another cell, the subscript formatting comes along. If you cut and paste, move the cell, or sort the data, the subscript stays with the text.
However, if you edit the cell and retype the text, you lose the subscript formatting on the new text. You have to reapply it. If you delete part of the subscript text, the formatting on the remaining text stays intact.
Subscript formatting does not affect formulas or calculations. If a cell contains a formula and you format part of the displayed result as subscript, the formula itself does not change. The subscript is only visual.
Subscript versus superscript in Excel
Superscript is the opposite of subscript — it raises text above the baseline instead of lowering it below. You use superscript for exponents (x²), trademark symbols (™), or footnote markers. The keyboard shortcut for superscript on Windows is Ctrl+Shift+= (hold Ctrl and Shift, then press equals). On Mac, it is Cmd+Shift+=.
Both subscript and superscript are found in the same Format Cells dialog under the Font tab. You can apply either one to any text in a cell, and you can mix subscript and superscript in the same cell if needed. Pressing the superscript shortcut on subscript text removes the subscript and applies superscript instead.
Troubleshooting subscript formatting problems
If the keyboard shortcut does not work, check whether you are in edit mode. You must double-click the cell and select the text inside it; clicking the cell once and pressing the shortcut will not work. Also verify that you have text or numbers selected — if nothing is selected, the shortcut does nothing.
On some keyboard layouts, the equals sign is in a different location or requires a modifier key. If Ctrl+= does not work, try using the Format Cells dialog instead. Right-click the selected text, choose Format Cells, click the Font tab, and check the Subscript box.
If subscript text appears in your cell but does not print or does not show in a PDF export, check your printer settings. Some printers or export tools have options to ignore formatting. Subscript should print and export normally in most cases, but if it does not, verify the print preview before sending to the printer.
Frequently Asked Questions
Can I subscript an entire cell or only part of the text?
You can only subscript part of the text within a cell. You must enter edit mode, select the specific characters you want to subscript, and then apply the formatting. You cannot subscript a whole cell at once.
Does subscript text count toward the character limit in a cell?
Yes. Subscript is formatting only — it does not add characters or change the text itself. A cell can hold up to 32,767 characters whether or not some of them are subscripted.
What if I subscript text in a cell that is part of a formula?
Subscript formatting does not affect the formula or its calculation. If a cell contains a formula and you format part of the displayed result as subscript, the formula works exactly the same way. The subscript is visual only.
Will subscript text display correctly if I share the file with someone else?
Yes. Subscript formatting is stored in the Excel file and will display on any computer that opens it, as long as the font is available. If the font is missing, the text may display differently, but the subscript formatting itself will remain.
Can I use subscript in a formula or in a cell name?
You can format subscript text in a cell that contains a formula, but the subscript only affects how the result displays — not the formula itself. You cannot use subscript in a formula's code or in a named range.