HTML Entity for Music Sharp Sign (♯)

Beginner

5 min read

Updated: Sep 2026

1 example

Unicode U+266F

HTML Entity for Music Sharp Sign (U+266F) tutorial illustration

Definition

What Is the Music Sharp Sign Entity?

Music Sharp Sign (♯) is the accidental at Unicode U+266F that raises a pitch by one semitone. HTML5 provides &sharp;. Example: F♯ for F-sharp.

Remember

Character     ♯
Unicode       U+266F
Named entity  &sharp;
Hex entity    &#x266F;
Decimal       &#9839;
CSS escape    \266F

Named, hex, decimal, CSS, and a typed character all produce the same glyph: ♯.

Reference

Quick Reference

One table for every form you will actually use.

Form	Code	Where it goes
Named entity	`&sharp;`	HTML markup (preferred)
Direct character	`♯`	UTF-8 HTML text
Hex entity	`♯`	HTML markup
Decimal entity	`♯`	HTML markup
CSS escape	`\266F`	Stylesheet `content`

When to Use Which

Situation	Use
Sharp accidental / key name	`&sharp;`
Need an entity in HTML source	`&sharp;`, `♯`, or `♯`
Generated text via `::before` / `::after`	`content: "\266F"`
Flat accidental (♭)	See Music Flat Sign — `&flat;`
Hash / number sign (#)	Type `#` — not a music sharp

See it

Live Preview

Sharp in key names and beside flat, natural, and hash.

Example F♯ major

Large glyph ♯

Named entity &sharp; → ♯

vs ♭ / ♮ / # ♯ | ♭ | ♮ | #

With entities Named: ♯ | Hex: ♯ | Decimal: ♯

Code

Complete HTML Example

One page that shows the Music Sharp Sign with named, hex, decimal, and CSS forms. Use View Output or open the live editor.

Named + Hex + Decimal + CSS

Four ways to produce ♯ in a single document.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Music Sharp Sign (♯)</title>
  <style>
    #point::after {
      content: "\266F";
    }
  </style>
</head>
<body>
  <p>Using Named Entity: &sharp;</p>
  <p>Using Hex Code: &#x266F;</p>
  <p>Using HTML Code: &#9839;</p>
  <p id="point">Using CSS Entity: </p>
  <p>Key: F&sharp; major</p>
</body>
</html>

Try It Yourself

How It Works

1. Named: &sharp; is the clearest HTML form and renders ♯.

2. Hex: U+266F → ♯ in HTML. Same result as the named entity.

3. Decimal: same code point as 9839 → ♯. Same result as hex and named.

4. CSS: use \266F in content (not an HTML entity). #point::after appends that ♯ after the paragraph text.

Pitfalls & Tips

Common mistakes when working with the Music Sharp Sign.

Prefer

Use `&sharp;`

The named form is clearer than numeric references and is defined in HTML5.

vs #

Not the hash key

Keyboard # is U+0023 (NUMBER SIGN). Prefer &sharp; for music accidentals.

vs ♭

Not flat

&flat; lowers pitch. &sharp; raises pitch. Do not swap them.

CSS vs HTML

Do not mix escapes

\266F belongs in CSS. &sharp; / ♯ / ♯ belong in HTML.

Encoding

Declare UTF-8

If you type ♯ directly, keep <meta charset="UTF-8"> so the file is not misread.

Semicolon

End references

Always finish with ; — write &sharp;, not &sharp.

Compatibility

Browser Support

Music Sharp Sign (U+266F) and its entity forms (&sharp;, ♯, ♯, CSS \\266F) are supported in all mainstream browsers with a Unicode-capable font.

✓ Universal support

Music Sharp Sign (&sharp;)

Encode with named, hex, decimal, or CSS escape — or type ♯ directly in UTF-8 HTML.

100% Browser coverage

Google Chrome Supported

Yes

Microsoft Edge Supported

Yes

Mozilla Firefox Supported

Yes

Apple Safari Supported

Yes

Opera Supported

Yes

Internet Explorer IE 9+

Yes*

U+266F / &sharp; Full support

Bottom line: Prefer &sharp; in music HTML. Use \\266F only inside CSS content.

Remember

Key Takeaways

Unicode: Music Sharp Sign is U+266F (decimal 9839).
HTML: prefer &sharp;.
CSS: use \266F inside content for generated text.
Lookalike: not # — use with &flat; and &natural;.

One line: U+266F → prefer &sharp; (also ♯ / CSS \266F).

Frequently Asked Questions

How do I display the Music Sharp Sign in HTML using entities?

Use &sharp; (named), ♯ (hex), ♯ (decimal), or the CSS escape \266F in the content property. All render ♯. Prefer &sharp; in music HTML.

What is the Unicode value for the Music Sharp Sign?

U+266F (MUSIC SHARP SIGN). Hex 266F, decimal 9839. It belongs to the Miscellaneous Symbols block.

Is there a named HTML entity for U+266F?

Yes. HTML5 defines &sharp; for ♯.

When should I use this HTML entity?

Use it in chord charts, key names, sheet-music text, and music education — for example F♯ major or C♯.

What is the difference between HTML code and CSS entity for U+266F?

HTML entities (&sharp;, ♯, or ♯) go in markup. The CSS escape \266F is used in stylesheets (usually in the content property of ::before/::after). Both render ♯.

Is ♯ the same as # or ♭?

No. Sharp is &sharp; (♯, U+266F). Hash/number sign is # (U+0023). Flat is &flat; (♭, U+266D). Different characters.

Did you know?

Music Sharp Sign is Unicode U+266F (decimal 9839) — in Miscellaneous Symbols. HTML5 provides &sharp;. It raises a pitch by a semitone (e.g. F♯). Pair it with Flat &flat; (♭) and Natural &natural; (♮). Not the same as the hash/number sign # (U+0023).

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About the author

Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

Experience 12 years building web and cloud systems
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I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

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