HTML sub tag

Example

Subscript text:

<p>This text contains _subscript text.</p>

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

Global Attributes

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

Event Attributes

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

Default CSS Settings

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

Example

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