Lowercase u with umlaut (ü) is the Latin-1 Supplement character at Unicode U+00FC (LATIN SMALL LETTER U WITH DIAERESIS). Two dots sit above the letter — also called a diaeresis. Essential in German (über, für) and many other languages. HTML5 defines the named entity ü.
Remember
Character ü
Unicode U+00FC
Named entity ü
Hex entity ü
Decimal ü
CSS escape \00FC
All of these produce the same glyph: ü. Prefer ü or a pasted ü in UTF-8 pages; use numeric or CSS forms when you need them.
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Direct character
ü
HTML text (UTF-8 default)
Named entity
ü
HTML markup (readable choice)
Hex entity
ü
HTML markup
Decimal entity
ü
HTML markup
CSS escape
\00FC
Stylesheet content
When to Use Which
Situation
Use
German / UTF-8 text
Type or paste ü
Readable entity in HTML source
ü
Numeric entity required
ü or ü
Generated text via ::before / ::after
content: "\00FC"
Pinyin tone on ü (ǘ)
Different character — see Related Topics
See it
Live Preview
Lowercase u with umlaut rendered in common contexts.
Germanüber, für, grün
Large glyphü
Case pairÜ ü
With entitiesNamed: ü | Hex: ü | Decimal: ü
Not the sameu (U+0075) · ǘ (Pinyin tone 2)
Code
Complete HTML Example
One page that shows lowercase u with umlaut with named, hex, decimal, and CSS forms. Use View Output or open the live editor.
Named + Hex + Decimal + CSS
Four ways to produce ü in a single document.
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Lowercase U Umlaut (ü) in HTML</title>
<style>
#point::after {
content: "\00FC";
}
</style>
</head>
<body>
<p>U Umlaut using Named Entity: ü</p>
<p>U Umlaut using Hex Code: ü</p>
<p>U Umlaut using HTML Code: ü</p>
<p id="point">U Umlaut using CSS Entity: </p>
</body>
</html>
U Umlaut using Named Entity: ü
U Umlaut using Hex Code: ü
U Umlaut using HTML Code: ü
U Umlaut using CSS Entity: ü
How It Works
1. Named:ü is the HTML5 named entity for U+00FC. Clearest form in HTML source.
2. Hex:U+00FC → ü in HTML. Same glyph as named.
3. Decimal: same code point as 252 → ü. Same result.
4. CSS: use \00FC in content (not an HTML entity). #point::after appends that ü after the paragraph text.
Pitfalls & Tips
Common mistakes when working with the u umlaut entity.
Named
Prefer ü
HTML5 defines a named entity for this letter — use it for readable HTML.
CSS vs HTML
Do not mix escapes
\00FC belongs in CSS. ü / ü / ü belong in HTML.
Look-alikes
Not u or ǘ
Plain u is U+0075; ǘ adds a Pinyin tone. Umlaut is two dots only.
Case
ü vs Ü
Uppercase is U+00DC (Ü) — a different code point from U+00FC.
Semicolon
End references
Always finish with ; — write ü, not ü.
UTF-8
Declare charset
If you paste ü directly, serve the page as UTF-8 with <meta charset="UTF-8">.
Compatibility
Browser Support
Lowercase u with umlaut (U+00FC) and its entity forms (ü, ü, ü, CSS \\00FC) are supported in all mainstream browsers.
✓ Universal support
Lowercase U Umlaut (ü)
Use ü, paste ü, or encode with hex, decimal, or CSS escape — same glyph everywhere.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+00FC / entitiesFull support
Bottom line: Prefer ü or a pasted ü in UTF-8 text. Use ü / ü when a numeric form is required, and \\00FC only inside CSS content.
Remember
Key Takeaways
Unicode: u with umlaut is U+00FC (decimal 252), Latin-1 Supplement.
HTML: prefer ü, or use ü / ü.
CSS: use \00FC inside content for generated text.
Use: German ü — not the same as plain u or Pinyin ǘ.
One line:U+00FC → ü, or ü / ü / CSS \00FC.
Frequently Asked Questions
Use ü (named), ü (hex), ü (decimal), or the CSS escape \00FC in the content property. All render ü. In UTF-8 files you can also type or paste ü directly.
U+00FC (LATIN SMALL LETTER U WITH DIAERESIS). Hex 00FC, decimal 252. It belongs to Latin-1 Supplement and is used in German, Turkish, Hungarian, and other languages.
Yes. HTML5 defines ü for this character. You can also use numeric references ü or ü.
Use it for German and other Latin text with ü, linguistic examples, CSS-generated content, or when encoding must be explicit. Prefer ü when you want a readable named form in HTML source.
HTML entities (ü, ü, or ü) go in markup. The CSS escape \00FC is used in stylesheets (usually in the content property of ::before/::after). Both render ü.
Plain u is U+0075. ǘ (U+01D8) adds an acute for Pinyin second tone. ü (U+00FC) has only the two dots (umlaut/diaeresis). Do not substitute one for another.
🤔
Did you know?
Lowercase u with umlaut (ü) is Unicode U+00FC (decimal 252) in Latin-1 Supplement — also called diaeresis. HTML5 defines the named entity ü — also usable as ü or ü. Essential in German (über, für) and many other languages.
