The HTML Output element (<output>) is a container element into which a site or app can inject the results of a calculation or the outcome of a user action.

Content categories Flow content, phrasing content, listed, labelable, resettable  form-associated element, palpable content.
Permitted content Phrasing content.
Tag omission None, both the starting and ending tag are mandatory.
Permitted parents Any element that accepts phrasing content.
Permitted ARIA roles Any
DOM interface HTMLOutputElement

Attributes

This element includes the global attributes.

for
A list of IDs of other elements, indicating that those elements contributed input values to (or otherwise affected) the calculation.
form
The form element that this element is associated with (its "form owner"). The value of the attribute must be an ID of a form element in the same document. If this attribute is not specified, the output element must be a descendant of a form element. This attribute enables you to place output elements anywhere within a document, not just as descendants of their form elements.
name
The name of the element.

Example

This form provides a slider whose value can range between 0 and 100. and an <input> element into which you can enter a second number. The two numbers are added together and the result is displayed in the <output> element each time the value of any of the controls changes.

<form oninput="result.value=parseInt(a.value)+parseInt(b.value)">
    <input type="range" name="b" value="50" /> +
    <input type="number" name="a" value="10" /> =
    <output name="result">60</output>
</form>

Specifications

Specification Status Comment
HTML Living Standard
The definition of '<output>' in that specification.
Living Standard  
HTML5
The definition of '<output>' in that specification.
Recommendation  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support10 Yes4 No117
for10 Yes4 No117
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes Yes Yes4 No ? Yes
for Yes Yes Yes4 No ? Yes

See also