• Skip to main content
  • Skip to search
  • Skip to select language
MDN Web Docs
  • References
    • Overview / Web Technology

      Web technology reference for developers

    • HTML

      Structure of content on the web

    • CSS

      Code used to describe document style

    • JavaScript

      General-purpose scripting language

    • HTTP

      Protocol for transmitting web resources

    • Web APIs

      Interfaces for building web applications

    • Web Extensions

      Developing extensions for web browsers

    • Accessibility

      Build web projects usable for all

    • Web Technology

      Web technology reference for developers

  • Learn
    • Overview / MDN Learning Area

      Learn web development

    • MDN Learning Area

      Learn web development

    • HTML

      Learn to structure web content with HTML

    • CSS

      Learn to style content using CSS

    • JavaScript

      Learn to run scripts in the browser

    • Accessibility

      Learn to make the web accessible to all

  • Plus
    • Overview

      A customized MDN experience

    • AI Help

      Get real-time assistance and support

    • Updates

      All browser compatibility updates at a glance

    • Documentation

      Learn how to use MDN Plus

    • FAQ

      Frequently asked questions about MDN Plus

  • Curriculum New
  • Blog
    • Playground

      Write, test and share your code

    • HTTP Observatory

      Scan a website for free

    • AI Help

      Get real-time assistance and support

  • Log in
  • Sign up for free
  1. References
  2. HTML
  3. Reference
  4. Elements
    • Deutsch
    • Español
    • Français
    • 日本語
    • 中文 (简体)

In this article

  • Try it
  • Attributes
  • Usage notes
  • Examples
  • Technical summary
  • Specifications
  • Browser compatibility
  • See also
  1. HTML
  2. Guides
  3. Content categories
  4. Comments
  5. Date and time formats
  6. Constraint validation
  7. Viewport meta element
  8. Responsive images
  9. Microdata
  10. Microformats
  11. Quirks and standards modes
  12. HTML cheatsheet
  13. How to
  14. Define terms with HTML
  15. Use data attributes
  16. Use cross-origin images
  17. Add a hitmap on top of an image
  18. Author fast-loading HTML pages
  19. Add JavaScript
  20. Reference
  21. Elements
    1. Deprecated
    2. Deprecated

    3. Deprecated
    4. Deprecated
    5. Experimental
    6. Deprecated
    7. Deprecated
    8. Deprecated

Superior lettering

Superior lettering is not technically the same thing as superscript. However, it is common to use to present superior lettering in HTML. Among the most common uses of superior lettering is the presentation of certain abbreviations in French:

html

Robert a présenté son rapport à Mlle Bernard.

Result

Ordinal numbers

Ordinal numbers, such as "fourth" in English or "quinto" in Spanish may be abbreviated using numerals and language-specific text rendered in superscript:

html

The ordinal number "fifth" can be abbreviated in various languages as follows:

  • English: 5th
  • French: 5ème

Result

Technical summary

Content categories Flow content, phrasing content, 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.
Implicit ARIA role superscript
Permitted ARIA roles Any
DOM interface HTMLElement

Specifications

Specification
HTML
# the-sub-and-sup-elements

Browser compatibility

See also

  • The HTML element that produces subscripts. Note that you cannot use sub and sup at the same time: you need to use MathML to produce both a superscript and a subscript next to the chemical symbol of an element, representing its atomic number and its nuclear number.
  • The , , and MathML elements.
  • The CSS vertical-align property.

Help improve MDN

Learn how to contribute.

This page was last modified on Apr 10, 2025 by MDN contributors.

View this page on GitHub • Report a problem with this content
MDN logo

Your blueprint for a better internet.

  • MDN on Bluesky
  • MDN on Mastodon
  • MDN on X (formerly Twitter)
  • MDN on GitHub
  • MDN Blog RSS Feed

MDN

  • About
  • Blog
  • Careers
  • Advertise with us

Support

  • Product help
  • Report an issue

Our communities

  • MDN Community
  • MDN Forum
  • MDN Chat

Developers

  • Web Technologies
  • Learn Web Development
  • MDN Plus
  • Hacks Blog
  • Website Privacy Notice
  • Cookies
  • Legal
  • Community Participation Guidelines

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2025 by individual mozilla.org contributors. Content available under a Creative Commons license.