The <sup> tag is used to display superscript text.
Superscript is text that is smaller and appears higher than regular text.
A <sup> tag that creates an exponent over the number 4.
42 is 16.
<p>
4<sup>2</sup> is 16.
</p>
sup = superscript
The <sup> tag is used to create superscript text.
Superscript text is half a character above the baseline and in a smaller font.
The <sup> tag is commonly used to display footnotes or mathematical formulas.
Tip: The <sup> tag is not used for trademark symbols: ™ and ®.
These characters are already superscripted themselves.
With just <sup> and <sub>,
complex chemical formulas can be written.
The formula for Hexamminecobalt chloride is [Co(NH3)6]3+Cl3−
<p>
The formula for Hexamminecobalt chloride is
[Co(NH<sub>3</sub>)<sub>6</sub>]<sup>3+</sup>Cl<sup>3−</sup>
</p>
The <sup> element has no attributes, but it does accept global attributes.
The following are commonly used.
| Attribute | Value | Description |
|---|---|---|
| id | value | Provides the sup element with a unique identifier. |
| class | classnames | Assigns one or more classnames to the sup element. |
| style | CSS-values | Assigns CSS style values to the sup element. |
For additional global attributes see our global attributes list.
The <sup> tag is part of a group of tags
that are used to create and format text documents.
This group is referred to as the Text tag group.
Together, they allow you to create comprehensive HTML text documents.
Here is a list of text tags.
| Element | Description |
|---|---|
| <h1>-<h6> | Defines text headings in 6 different sizes |
| <p> | Creates a paragraph |
| <span> | Container for one or more inline text elements |
| <br> | Creates a line break |
| <sup> | Specifies superscript text |
| <sub> | Specifies subscripted text |
| <u> | Specifies underlined text |
| <i> | Specifies italic text |
| <b> | Specifies bold text |
| <em> | Marks text that needs emphasis |
| <strong> | Indicates text that is important or with high urgency |
| <del> | Defines deleted text |
| <ins> | Defines inserted text |
| <ruby> | Represents a small annotation with pronunciation of text |
| <kbd> | Specifies keyboard input, such as, CTRL or ALT |
| <wbr> | Specifies a preferred word-break location for long words |
Here is when <sup> support started for each browser:
 Chrome
|
1.0 | Sep 2008 |
 Firefox
|
1.0 | Sep 2002 |
 IE/Edge
|
1.0 | Aug 1995 |
 Opera
|
1.0 | Jan 2006 |
 Safari
|
1.0 | Jan 2003 |
