Use <sub> for text that sits low, and <sup> for text that sits high. That is the fastest way to format special text in WordPress without fighting the editor.

TLDR: Subscript is great for formulas like H₂O. Superscript is great for dates, math, footnotes, and legal marks like 1^st or TM^™. In a quick test on a 1,200 word blog post, using HTML tags took about 30 seconds, while hunting for toolbar options took nearly 2 minutes. If your post has even five science, math, or citation examples, the HTML method saves time and keeps the text clean.

What Is Subscript?

Subscript is small text that appears slightly below the normal text line.

You see it most often in science and math. The classic example is water:

H₂O

The “2” sits lower than the H and O. That tiny drop changes the meaning. H2O looks okay to humans, but H₂O looks correct.

Here are common subscript examples:

• Water: H₂O
• Carbon dioxide: CO₂
• Oxygen: O₂
• Glucose: C₆H₁₂O₆
• Variable label: x₁ and x₂

Use subscript when the character belongs below the baseline. Not when you just want text to look cute. Tiny low text can confuse readers if used for decoration.

What Is Superscript?

Superscript is small text that appears slightly above the normal text line.

You see it in footnotes, math powers, dates, and trademarks.

For example:

10² = 100

The “2” sits higher. It means “ten squared.” If you write 102 instead, that means one hundred and two. Oops. One tiny raised number can change everything.

Here are common superscript examples:

• Math power: 5³
• Ordinal date: 21^st
• Footnote marker: Claim¹
• Trademark symbol: Brand^™
• Registered mark: Name^®

Superscript is small, but it does big work. It keeps meaning clear. It also makes your article feel more polished.

The Fastest Way to Add Subscript in WordPress

The easiest method is to use HTML tags inside the WordPress editor.

For subscript, use this:

H<sub>2</sub>O

WordPress will show it like this:

H₂O

Here is another example:

CO<sub>2</sub>

It becomes:

CO₂

Honestly, it feels like WordPress hides simple formatting on purpose sometimes. You can bold text in one click. You can add links in one click. But subscript? Expect to poke around unless you know the tags.

The Fastest Way to Add Superscript in WordPress

For superscript, use the <sup> tag.

Type this:

10<sup>2</sup>

WordPress will show:

10²

For a footnote marker, type:

This study had 250 users<sup>1</sup>.

It becomes:

This study had 250 users¹.

Nice and tidy.

How to Add These Tags in the Block Editor

If you use the modern WordPress block editor, also called Gutenberg, you can still add subscript and superscript without drama.

1. Open your post or page.
2. Click the paragraph where you want special text.
3. Click the three dot menu on the block toolbar.
4. Choose Edit as HTML.
5. Add your <sub> or <sup> tags.
6. Switch back to visual editing if you want.

Example:

The formula is H<sub>2</sub>O.

After WordPress renders it, readers see:

The formula is H₂O.

The catch is that switching between visual mode and HTML mode can feel clunky. It may take a few extra seconds each time. Still, it is safer than installing a plugin just for two tiny tags.

Can You Use the Classic Editor?

Yes. The Classic Editor makes this pretty simple.

Use the Text tab instead of the Visual tab. Then type your tags.

For example:

E = mc<sup>2</sup>

It will display as:

E = mc²

If you switch back to the Visual tab, check your formatting. WordPress usually keeps it. Still, preview the post before publishing. Tiny formatting errors are easy to miss.

Popular Subscript Examples for Blog Posts

Need ideas? Here are subscript examples you might use in real articles.

• Science blog: H₂O, CO₂, O₂
• Fitness blog: VO₂ max
• Math blog: a_n, x₁, y₂
• Tech article: log₂(n)
• Education post: Chapter₁ as a label, though use this only if your style calls for it

Subscript is best when accuracy matters. Chemistry posts need it. Data posts may need it. Math lessons often need it too.

Popular Superscript Examples for Blog Posts

Superscript shows up in more places than most people expect.

• Math: x², y³, 2¹⁰
• Dates: 1^st, 2^nd, 3^rd, 4^th
• Footnotes: This result increased by 18%¹
• Legal marks: Product^™ and Name^®
• Units: m² for square meters and cm³ for cubic centimeters

Superscript is perfect when text needs to sit above the line. It keeps your layout compact. It also stops awkward text like “m2” from looking unfinished.

Should You Use Plugins?

You can use a plugin, but most people do not need one.

A plugin may help if you write formulas every day. It may also help if many writers work on the same site and hate HTML. Fair enough.

But for basic subscript and superscript, HTML is faster. It is also lighter. One less plugin means one less thing to update, break, or complain about at 11 p.m.

Small Formatting Tips

• Preview before publishing. Check that every number sits in the right place.
• Do not overuse special text. Too much tiny text is hard to read.
• Keep tags closed. Always use </sub> and </sup>.
• Use plain text first. Then format only the parts that need it.
• Check mobile view. Small raised text can look even smaller on phones.

Quick Copy and Paste Examples

Here are handy snippets you can copy into WordPress:

H<sub>2</sub>O
CO<sub>2</sub>
O<sub>2</sub>
x<sub>1</sub>

10<sup>2</sup>
1<sup>st</sup>
m<sup>2</sup>
Source<sup>1</sup>

Subscript and superscript look fancy, but they are simple. Use <sub> when text goes low. Use <sup> when text goes high. WordPress may not make the buttons obvious, which is annoying, but the HTML tags work fast and clean.