HTML Entity for Lowercase U Double Acute (ű)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+0171
HTML Entity for Lowercase U Double Acute tutorial illustration

What You'll Learn

How to display the lowercase u with double acute (ű) in HTML using named entity, hexadecimal, decimal, and CSS escape methods. This character is U+0171 in the Latin Extended-A block. It combines the letter u with a double acute accent (Hungarian: hosszú ékezet) and is a distinct letter in the Hungarian alphabet (e.g. űrhajó for “spaceship”).

Render it with ű, ű, ű, or CSS escape \0171. The named entity ű is often the most readable option in HTML source.

⚡ Quick Reference — Lowercase U Double Acute Entity

Unicode U+0171

Latin Extended-A

Hex Code ű

Hexadecimal reference

HTML Code ű

Decimal reference

Named Entity ű

Most readable option

Reference Table
Name           Value
────────────   ──────────
Unicode        U+0171
Hex code       ű
HTML code      ű
Named entity   ű
CSS code       \0171
Meaning        Latin small letter u with double acute
Related        U+0170 = Ű (Ű, uppercase)
Block          Latin Extended-A (U+0100–U+017F)
1

Complete HTML Example

A simple example showing the lowercase u double acute (ű) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\0171";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x0171;</p>
<p>Symbol (decimal): &#369;</p>
<p>Symbol (named): &udblac;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try It Yourself

🌐 Browser Support

The lowercase u double acute (ű) and the named entity &udblac; are supported in all modern browsers as part of Latin Extended-A:

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

👀 Live Preview

See the lowercase u double acute (ű) in language and content contexts:

Large glyphű
Hungarianűrhajó, űző, magyar ábécé
Unicode nameLatin small letter u with double acute
UppercaseŰ (U+0170) — &Udblac;
Not the same asú (&uacute;)  |  û (&ucirc;)  |  ü (&uuml;)
Numeric refs&#x0171; &#369; &udblac; \0171

🧠 How It Works

1

Hexadecimal Code

&#x0171; uses the Unicode hexadecimal value 0171 to display the character. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#369; uses the decimal Unicode value 369 to display the same character. A common method when a numeric reference is needed.

HTML markup
3

Named Entity

&udblac; is the standard named entity for ű—readable in source HTML and part of the HTML entity set for Latin Extended-A characters.

HTML markup
4

CSS Entity

\0171 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All four methods produce the glyph: ű. Unicode U+0171 sits in Latin Extended-A. Uppercase equivalent: U+0170 (&Udblac;). Do not confuse with ú (acute), û (circumflex), or ü (diaeresis).

✅

Use Cases

The lowercase u double acute (ű) is commonly used in:

🇮🇼 Hungarian

Essential letter in Hungarian orthography (űrhajó, űző) and official Hungarian-language web content.

📚 Language Learning

Hungarian courses, textbooks, and apps teaching the extended Latin alphabet including ű and Ű.

📝 Linguistics & Phonology

Phonetic transcription and linguistic descriptions using u with double acute marking.

🌐 Transliteration

Romanization systems and dictionaries requiring extended Latin characters with double acute accents.

📄 Academic Content

Papers, character charts, and language resources requiring precise precomposed character representation.

♿ Accessibility

Using the correct character (U+0171) with lang="hu" helps assistive technologies interpret Hungarian text correctly.

⚙ Programmatic HTML

When building HTML from Hungarian data, using &udblac; or &#369; guarantees correct output.

💡 Best Practices

Do

  • Serve pages as UTF-8; you can type ű directly in UTF-8 source
  • Use &udblac; in HTML when possible for readability
  • Use numeric references (&#x0171; or &#369;) when escaping is required
  • Use \0171 in CSS content when generating the symbol via pseudo-elements
  • Use fonts that support Latin Extended-A characters (U+0100–U+017F)

Don’t

  • Confuse ű with ú (&uacute;), û (&ucirc;), or ü (&uuml;)
  • Use the old incorrect CSS escape \00171—the correct value is \0171
  • Put CSS escape \0171 in HTML text nodes
  • Substitute plain u when the Hungarian letter ű is required
  • Double-encode numeric references in dynamically generated HTML

Key Takeaways

1

Three HTML references plus a named entity all render ű

&#x0171; &#369; &udblac;
2

For CSS stylesheets, use the escape in the content property

\0171
3

Unicode U+0171 — LATIN SMALL LETTER U WITH DOUBLE ACUTE

4

Hungarian letter (űrhajó); uppercase is Ű (&Udblac;)

5

Previous: Lowercase U Diaeresis Macron (ǖ)   Next: Lowercase U Double Grave

❓ Frequently Asked Questions

Use &udblac; (named), &#x0171; (hex), &#369; (decimal), or \0171 in CSS content. All produce ű. In UTF-8 you can also type ű directly.
U+0171 (LATIN SMALL LETTER U WITH DOUBLE ACUTE). Latin Extended-A block. Hex 0171, decimal 369. Used in Hungarian (e.g. űrhajó). Uppercase form is U+0170 (&Udblac;).
When displaying Hungarian text, linguistic notation, transliteration systems, dictionaries, or any content requiring the distinct Hungarian letter ű.
Yes. The named HTML entity is &udblac;. You can also use numeric codes &#369; or &#x0171;, or the CSS entity \0171. Do not confuse with &uacute; (U+00FA) or &ucirc; (U+00FB).
HTML code (&#369; or &#x0171;) or the named entity &udblac; is used in HTML content. The CSS entity \0171 is used in stylesheets in the content property of pseudo-elements. Both produce ű but in different contexts.

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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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Lowercase U Diaeresis Macron (ǖ) Lowercase U Double Grave (ȕ)