Web/CSS/time

The <time> CSS data type represents a time value expressed in seconds or milliseconds. It is used in animation, transition, and related properties.

Syntax

The <time> data type consists of a​ ​​​​​​<number> followed by one of the units listed below. Optionally, it may be preceded by a single + or - sign. As with all dimensions, there is no space between the unit literal and the number.

Note: Although the number 0 is always the same regardless of unit, the unit may not be omitted. In other words, 0 is invalid and does not represent 0s or 0ms.

Units

s

Represents a time in seconds. Examples: 0s, 1.5s, -60s.

ms

Represents a time in milliseconds. Examples: 0ms, 150.25ms, -60000ms.

Note: Conversion between s and ms follows the logical 1s = 1000ms.

Examples

Valid times

12s         Positive integer
-456ms      Negative integer
4.3ms       Non-integer
14mS        The unit is case-insensitive, although capital letters are not recommended.
+0s         Zero with a leading + and a unit
-0ms        Zero with a leading - and a unit

Invalid times

0           Although unitless zero is allowed for <length>s, it's invalid for <time>s.
12.0        This is a <number>, not a <time>, because it's missing a unit.
7 ms        No space is allowed between the number and the unit.

Specifications

Specification	Status	Comment
CSS Values and Units Module Level 4The definition of '<time>' in that specification.	Editor's Draft
CSS Values and Units Module Level 3The definition of '<time>' in that specification.	Candidate Recommendation	Normative definition of s and ms.
CSS Level 2 (Revision 1)The definition of '<time>' in that specification.	Recommendation	Informal definition of s and ms.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
<time>	Chrome Full support 1	Edge Full support 12	Firefox Full support 4	IE Full support 9	Opera Full support 10.1	Safari Full support 3.1	WebView Android Full support 2	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 2	Samsung Internet Android Full support 1.0

Legend

Full support  

Full support

<time> by Mozilla Contributors is licensed under CC-BY-SA 2.5.