Nossos voluntários ainda não traduziram este artigo para o Português (do Brasil). Junte-se a nós e ajude-nos a fazer o trabalho!
Você também pode ler o artigo em English (US).

The HTML <th> element defines a cell as header of a group of table cells. The exact nature of this group is defined by the scope and headers attributes.

Content categories None.
Permitted content Flow content, but with no header, footer, sectioning content, or heading content descendants.
Tag omission The start tag is mandatory.
The end tag may be omitted, if it is immediately followed by a <th> or <td> element or if there are no more data in its parent element.
Permitted parents A <tr> element.
Permitted ARIA roles Any
DOM interface HTMLTableHeaderCellElement

Attributes

This element includes the global attributes.

abbr
This attribute contains a short abbreviated description of the cell's content. Some user-agents, such as speech readers, may present this description before the content itself.
align Obsolete since HTML5
This enumerated attribute specifies how the cell content's horizontal alignment will be handled. Possible values are:
  • left: The content is aligned to the left of the cell.
  • center: The content is centered in the cell.
  • right: The content is aligned to the right of the cell.
  • justify (with text only): The content is stretched out inside the cell so that it covers its entire width.
  • char (with text only): The content is aligned to a character inside the <th> element with minimal offset. This character is defined by the char and charoff attributes.

The default value when this attribute is not specified is left.

Note: Do not use this attribute as it is obsolete in the latest standard.
  • To achieve the same effect as the left, center, right or justify values, apply the CSS text-align property to the element.
  • To achieve the same effect as the char value, give the text-align property the same value you would use for the char. Unimplemented in CSS3.
axis Obsolete since HTML5
This attribute contains a list of space-separated strings. Each string is the id of a group of cells that this header applies to.
Note: Do not use this attribute as it is obsolete in the latest standard: use the scope attribute instead.
bgcolor
This attribute defines the background color of each cell in a column. It consists of a 6-digit hexadecimal code as defined in sRGB and is prefixed by '#'. This attribute may be used with one of sixteen predefined color strings:
  black = "#000000"   green = "#008000"
  silver = "#C0C0C0"   lime = "#00FF00"
  gray = "#808080"   olive = "#808000"
  white = "#FFFFFF"   yellow = "#FFFF00"
  maroon = "#800000"   navy = "#000080"
  red = "#FF0000"   blue = "#0000FF"
  purple = "#800080"   teal = "#008080"
  fuchsia = "#FF00FF"   aqua = "#00FFFF"
Note: Do not use this attribute, as it is non-standard and only implemented in some versions of Microsoft Internet Explorer: The <th> element should be styled using CSS. To create a similar effect use the background-color property in CSS instead.
char Obsolete since HTML5
The content in the cell element is aligned to a character. Typical values include a period (.) to align numbers or monetary values. If align is not set to char, this attribute is ignored.
Note: Do not use this attribute as it is obsolete in the latest standard. To achieve the same effect, you can specify the character as the first value of the text-align property, Unimplemented in CSS3.
charoff Obsolete since HTML5
This attribute is used to shift column data to the right of the character specified by the char attribute. Its value specifies the length of this shift.
Note: Do not use this attribute as it is obsolete in the latest standard.
colspan
This attribute contains a non-negative integer value that indicates for how many columns the cell extends. Its default value is 1. Values higher than 1000 will be considered as incorrect and will be set to the default value (1).
headers
This attribute contains a list of space-separated strings, each corresponding to the id attribute of the <th> elements that apply to this element.
height Deprecated since HTML4, Obsolete since HTML5
This attribute is used to define a recommended cell height.
Note: Do not use this attribute as it is obsolete in the latest standard: use the CSS height property instead.
rowspan
This attribute contains a non-negative integer value that indicates for how many rows the cell extends. Its default value is 1; if its value is set to 0, it extends until the end of the table section (<thead>, <tbody>, <tfoot>, even if implicitly defined), that the cell belongs to. Values higher than 65534 are clipped down to 65534.
scope
This enumerated attribute defines the cells that the header (defined in the <th>) element relates to. It may have the following values:
  • row: The header relates to all cells of the row it belongs to.
  • col: The header relates to all cells of the column it belongs to.
  • rowgroup: The header belongs to a rowgroup and relates to all of its cells. These cells can be placed to the right or the left of the header, depending on the value of the dir attribute in the <table> element.
  • colgroup: The header belongs to a colgroup and relates to all of its cells.
  • auto
valign Obsolete since HTML5
This attribute specifies how a text is vertically aligned inside a cell. Possible values for this attribute are:
  • baseline: Positions the text near the bottom of the cell and aligns it with the baseline of the characters instead of the bottom. If characters don't descend below the baseline, the baseline value achieves the same effect as bottom.
  • bottom: Positions the text near the bottom of the cell.
  • middle: Centers the text in the cell.
  • and top: Positions the text near the top of the cell.
Note: Do not use this attribute as it is obsolete in the latest standard: use the CSS vertical-align property instead.
width Deprecated since HTML4, Obsolete since HTML5
This attribute is used to define a recommended cell width. Additional space can be added with the cellspacing and cellpadding properties and the width of the <col> element can also create extra width. But, if a column's width is too narrow to show a particular cell properly, it will be widened when displayed.
Note: Do not use this attribute as it is obsolete in the latest standard: use the CSS width property instead.

Examples

See <table> for examples on <th>.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'th element' in that specification.
Living Standard  
HTML5
The definition of 'th element' in that specification.
Recommendation  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
abbrChrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
align
Deprecated
Chrome ? Edge Full support YesFirefox No support No
Notes
No support No
Notes
Notes See bug 915
IE Full support YesOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android No support No
Notes
No support No
Notes
Notes See bug 915
Opera Android ? Safari iOS ? Samsung Internet Android ?
axis
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
bgcolor
Deprecated
Chrome ? Edge No support NoFirefox No support NoIE Full support YesOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile No support NoFirefox Android No support NoOpera Android ? Safari iOS ? Samsung Internet Android ?
char
Deprecated
Chrome ? Edge Full support YesFirefox No support No
Notes
No support No
Notes
Notes See bug 2212
IE Full support YesOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android No support No
Notes
No support No
Notes
Notes See bug 2212
Opera Android ? Safari iOS ? Samsung Internet Android ?
charoff
Deprecated
Chrome ? Edge Full support YesFirefox No support No
Notes
No support No
Notes
Notes See bug 2212
IE Full support YesOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android No support No
Notes
No support No
Notes
Notes See bug 2212
Opera Android ? Safari iOS ? Samsung Internet Android ?
colspanChrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
headersChrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
rowspanChrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
scopeChrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes
valign
Deprecated
Chrome ? Edge Full support YesFirefox No support No
Notes
No support No
Notes
Notes See bug 915
IE Full support YesOpera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android No support No
Notes
No support No
Notes
Notes See bug 915
Opera Android ? Safari iOS ? Samsung Internet Android ?
width
Deprecated
Chrome Full support 1Edge Full support YesFirefox Full support 1IE Full support YesOpera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.
See implementation notes.
See implementation notes.

See also