HTML Entity for Uppercase F Hook (Ƒ)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+0191
HTML Entity for Uppercase F Hook tutorial illustration

What You'll Learn

How to display the uppercase f with hook (Ƒ) in HTML using hexadecimal, decimal, and CSS escape methods. In Unicode this is U+0191 (LATIN CAPITAL LETTER F WITH HOOK), the capital form of the hooked f used in linguistic and phonetic notation. It sits in the Latin Extended-B block.

Render it with Ƒ, Ƒ, or CSS escape \0191. There is no named HTML entity for this character (unlike the lowercase ƒ, which has ƒ).

⚡ Quick Reference — Uppercase F Hook Entity

Unicode U+0191

Latin Extended-B

Hex Code Ƒ

Hexadecimal reference

HTML Code Ƒ

Decimal reference

Named Entity —

No named entity

Reference Table
Name           Value
────────────   ──────────
Unicode        U+0191
Hex code       Ƒ
HTML code      Ƒ
Named entity   (none)
CSS code       \0191
Meaning        Latin capital letter F with hook
Related        U+0192 = ƒ (lowercase f hook / ƒ)
Block          Latin Extended-B (U+0180–U+024F)
1

Complete HTML Example

A simple example showing the uppercase f hook (Ƒ) using hexadecimal code, decimal HTML code, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\0191";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x0191;</p>
<p>Symbol (decimal): &#401;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The uppercase f hook (Ƒ) renders correctly in modern browsers when UTF-8 is used and the font supports Latin Extended-B:

Chrome1+
Firefox1+
Safari1+
Edge12+
Opera4+
Android4.4+
iOS Safari1+

👀 Live Preview

See the uppercase f hook (Ƒ) in linguistic and typographic contexts:

Large glyphƑ
Case pairƑ (U+0191) / ƒ (U+0192)
Lowercase noteƒ has named entity &fnof;; Ƒ does not
Not the same asplain F (U+0046)  |  ƒ (florin/function)
Numeric refs&#x0191; &#401; \0191

🧠 How It Works

1

Hexadecimal Code

&#x0191; uses the Unicode hexadecimal value 0191 to display the uppercase f hook. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#401; uses the decimal Unicode value 401 to display the same character. A common method for Latin Extended-B characters.

HTML markup
3

CSS Entity

\0191 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All three methods produce the glyph: Ƒ. Unicode U+0191 sits in Latin Extended-B. Lowercase counterpart: U+0192 (ƒ, &fnof;). There is no named HTML entity for Ƒ. Do not confuse with plain F (U+0046).

✅

Use Cases

The uppercase f hook (Ƒ) is commonly used in:

📚 Linguistic studies

Language research, documentation, and academic papers studying extended Latin characters with hooks.

🎤 Phonetic transcription

Phonetic guides and pronunciation references using the capital hooked f letter.

🎨 Specialized typography

Typographic designs, font demonstrations, and text formatting requiring extended Latin glyphs.

📄 Academic papers

Scholarly publications and linguistic databases requiring the capital f hook character.

⚙ Font testing

Character set demonstrations and Unicode showcases for Latin Extended-B coverage.

🌐 International text

Content using extended Latin characters from languages and writing systems beyond Basic Latin.

📚 Educational content

Unicode tutorials and character encoding guides explaining hooked Latin letters.

💡 Best Practices

Do

  • Use &#401; or &#x0191; in HTML (no named entity exists)
  • Serve pages as UTF-8; you can also type Ƒ directly in UTF-8 source
  • Use fonts that support Latin Extended-B (U+0180–U+024F)
  • Distinguish Ƒ (f hook) from plain F (U+0046) and ƒ (lowercase florin)
  • Pick one numeric style (hex or decimal) per project for consistency

Don’t

  • Assume a named entity exists—there is none for Ƒ
  • Substitute plain F or &fnof; when Ƒ is required
  • Put CSS escape \0191 in HTML text nodes
  • Use padded Unicode notation like U+00191—the correct value is U+0191
  • Use \00191 in CSS—the correct escape is \0191

Key Takeaways

1

Three references render Ƒ (no named entity)

&#x0191; &#401;
2

For CSS stylesheets, use the escape in the content property

\0191
3

Unicode U+0191 — LATIN CAPITAL LETTER F WITH HOOK

4

Capital form of hooked f in Latin Extended-B; pair with U+0192 (ƒ)

5

Previous: Uppercase F   Next: Uppercase F Script Capital (ℱ)

❓ Frequently Asked Questions

Use &#x0191; (hex), &#401; (decimal), or \0191 in CSS content. There is no named HTML entity for this character.
U+0191 (LATIN CAPITAL LETTER F WITH HOOK). Latin Extended-B block. Hex 0191, decimal 401. Used in linguistic studies and phonetic notation.
In linguistic studies, phonetic transcriptions, specialized typography, international text, academic papers, and any content requiring the capital f with hook glyph.
HTML code (&#401; or &#x0191;) is used in HTML content. The CSS entity (\0191) is used in CSS, e.g. in the content property of pseudo-elements. Both produce Ƒ but in different contexts.
No. There is no named HTML entity for Ƒ. Use &#401; or &#x0191; in HTML, or \0191 in CSS. The lowercase f hook ƒ has &fnof;, but the uppercase form does not.

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About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

  • Experience 12 years building web and cloud systems
  • Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

AWS Certified Developer – Associate (Credly)

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