How to Format Subscripts and Superscripts in Microsoft Word

Whether you're writing a chemistry formula, citing footnotes, or working with mathematical equations, subscripts (text that sits below the baseline) and superscripts (text that sits above) are essential formatting tools. Microsoft Word makes both straightforward once you know where to look. This guide walks you through every method—from quick keyboard shortcuts to the full Format menu—so you can choose what works best for your workflow.

What Are Subscripts and Superscripts? 📝

Subscripts are characters or numbers positioned slightly below the normal line of text. They're commonly used in chemistry (H₂O), biology, and mathematical notation.

Superscripts are characters or numbers positioned slightly above the normal line. You'll see them in footnote markers, mathematical exponents (x²), and trademark symbols (™).

Both formats are built into Word's character formatting system—they don't require special fonts or add-ons, and they work across all recent versions of Word for both Windows and Mac.

Method 1: Keyboard Shortcuts (Fastest)

The quickest route to subscript or superscript is the keyboard shortcut. These work in Word 2016 and later:

For superscript (Windows):

1. Select the text or character you want to format
2. Press Ctrl + Shift + Plus (the plus key on your keyboard)

For subscript (Windows):

1. Select the text or character you want to format
2. Press Ctrl + Equals (=)

For superscript (Mac):

1. Select the text or character you want to format
2. Press Command + Shift + Plus

For subscript (Mac):

1. Select the text or character you want to format
2. Press Command + Equals

This method works best when you only need to format one or two instances. If you're working with many subscripts or superscripts in a single document, consider using the Format menu or Home ribbon for a faster workflow.

Method 2: Using the Home Ribbon (Windows)

If keyboard shortcuts don't stick with you, the ribbon offers a visual alternative:

1. Select the text or character you want to format
2. Go to the Home tab
3. In the Font group, look for the superscript button (looks like x²) and subscript button (looks like x₂)
4. Click whichever you need

You can also expand the Font group by clicking the small arrow in the corner to access additional character formatting options.

Method 3: Format Menu (Windows & Mac)

For users who prefer menus over ribbons or shortcuts:

1. Select the text or character you want to format
2. Click Format in the menu bar
3. Select Text
4. Choose Superscript or Subscript

On Mac versions of Word, the path is similar: Format > Text > Superscript or Subscript.

This method also gives you access to more character formatting options if you need them.

Method 4: The Font Dialog Box (Advanced Access)

If you're already in the Font dialog box for other formatting changes:

1. Select the text you want to format
2. Press Ctrl + D (Windows) or Command + D (Mac) to open the Font dialog
3. Click the Advanced tab (or Character Spacing depending on your Word version)
4. Under Effects, check the box for Superscript or Subscript
5. Click OK

This approach is useful when you're applying multiple formatting changes at once, but it's slower than the other methods for a single formatting task.

Key Variables That Affect Your Choice

Different situations call for different approaches:

Common Formatting Scenarios

Chemistry formulas: Select only the numbers or elements that should appear smaller. For example, in "H₂O," select only the "2" before applying subscript.

Mathematical exponents: Select only the exponent number. For "x²," select only the "2."

Footnote or endnote markers: Word typically handles these automatically if you use the Insert > Footnote feature, but you can manually superscript numbers if needed.

Trademark or copyright symbols: You can superscript™ or ® symbols if your style guide requires it, though these usually appear at normal size in most documents.

Removing Subscript or Superscript Formatting

To undo subscript or superscript formatting:

1. Select the formatted text
2. Press the same keyboard shortcut again (Ctrl + Shift + Plus for superscript, Ctrl + Equals for subscript on Windows)
3. Or click the superscript/subscript button on the ribbon again to toggle it off

The formatting will return to normal text size and position immediately.

Things to Know Before You Start

Font support: Subscripts and superscripts work with virtually all fonts in Word. The characters automatically scale to a smaller size and reposition based on the formatting, not based on manually selecting smaller font sizes.

Spacing: Word handles spacing automatically, but text with many superscripts or subscripts can affect line spacing. If your document looks cramped, you may need to adjust paragraph spacing in the Paragraph settings.

Copying and pasting: Subscript and superscript formatting carries over when you copy text between Word documents or paste into other Office applications like Excel or PowerPoint.

Compatibility: If you're sharing your document with people using older versions of Word or converting to PDF, subscripts and superscripts remain intact. However, some formatting may shift slightly if the recipient is using different fonts or settings.

Deciding What Works for Your Workflow

The right method depends entirely on your habits and the scope of your work. Power users typing chemistry papers might prefer keyboard shortcuts for speed. Others writing formal documents with occasional superscripts might find the ribbon button more intuitive. There's no single "correct" approach—what matters is that you pick the method that requires the least friction for how you actually work.

Once you've formatted a few instances, whichever method you choose becomes automatic. Try the keyboard shortcut first; if it doesn't feel natural, the ribbon button is always there as a backup. 📊