W3Schools.com
THE WORLD'S LARGEST WEB DEVELOPER SITE
HTMLCSSJAVASCRIPTSQLPHPJQUERYBOOTSTRAPANGULARXML
 

HTML <sub> Tag


Example

Subscript text:

<p>This text contains <sub>subscript</sub> text.</p>

Try it Yourself »

Definition and Usage

The <sub> tag defines subscript text. Subscript text appears half a character below the normal line, and is sometimes rendered in a smaller font. Subscript text can be used for chemical formulas, like H2O.

Tip: Use the <sup> tag to define superscripted text.


Browser Support

Element
<sub> Yes Yes Yes Yes Yes

Differences Between HTML 4.01 and HTML5

NONE.


Global Attributes

The <sub> tag also supports the Global Attributes in HTML.


Event Attributes

The <sub> tag also supports the Event Attributes in HTML.


Related Pages

HTML tutorial: HTML Text Formatting

HTML DOM reference: Subscript Object


Default CSS Settings

Most browsers will display the <sub> element with the following default values:

Example

sub {
    vertical-align: sub;
    font-size: smaller;
}

Try it Yourself »