Lowercase o with stroke (ø) is the Unicode character at U+00F8 in Latin-1 Supplement. Official name: LATIN SMALL LETTER O WITH STROKE — the letter o with a diagonal stroke. Essential in Danish, Norwegian, and Faroese. HTML5 defines the named entity ø.
Remember
Character ø
Unicode U+00F8
Named entity ø
Hex entity ø
Decimal ø
CSS escape \00F8
Capital Ø (Ø)
Not the same o · ∅ (empty set) · ǿ (stroke + acute)
Prefer ø in HTML. Alternatives: ø, ø, or type ø in a UTF-8 document.
Built with Named: ø
Built with Hex: ø
Built with Decimal: ø
Built with CSS: ø
Typed: ø
Danish: København, smør
How It Works
1. Named:ø is the HTML5 name for U+00F8 → ø. Prefer this in markup.
2. Hex:ø inserts the same code point. Same visual as named.
3. Decimal: same code point as 248 → ø.
4. CSS: use \00F8 in content (not an HTML entity). #point::after appends ø.
5. Typed + sample: paste ø in UTF-8, or use ø in Danish words like København.
Pitfalls & Tips
Common mistakes when working with lowercase o with stroke.
Name
Prefer ø
The named entity is clearer than inventing names — use ø for U+00F8 in HTML.
Case
ø ≠ Ø
Named entities are case-sensitive. Lowercase is ø; uppercase is Ø.
∅
Not empty set
∅ (U+2205) is the empty-set symbol. ø is a Nordic letter — do not swap them in math vs language text.
ǿ
Not stroke + acute
ǿ (U+01FF) adds an acute on top of the stroke. See O Stroke Acute when that form is required.
CSS
Pad the CSS escape
Prefer \00F8 (four hex digits). A short \F8 can swallow the next hex digit if one follows immediately.
CSS vs HTML
Do not mix escapes
\00F8 belongs in CSS strings. ø / ø / ø belong in HTML.
Semicolon
End references
Always finish entities with ; — write ø, not ø.
Compatibility
Browser Support
Lowercase o with stroke (U+00F8) and its entity forms (ø, ø, ø, CSS \\00F8) are supported in all mainstream browsers. Visible glyphs depend on Latin-1 / Western European font coverage.
✓ Universal support
Lowercase O Slash (ø)
Encode with named, hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+00F8Full support
Bottom line: Prefer ø in HTML. Use ø / ø when numeric form is required, and \\00F8 only inside CSS content.
Remember
Key Takeaways
Unicode: lowercase o with stroke is U+00F8 (decimal 248) — glyph ø.
HTML: prefer ø — also ø / ø / type ø.
Prefer ø (named). You can also use ø (hex), ø (decimal), type ø in UTF-8, or the CSS escape \00F8 in content.
U+00F8 (LATIN SMALL LETTER O WITH STROKE). Hex F8, decimal 248. It belongs to Latin-1 Supplement (U+0080–U+00FF). The page title says “slash,” but Unicode names the mark a stroke through o.
Yes. HTML5 defines ø for ø. The capital form is Ø (Ø, U+00D8) — names are case-sensitive.
Use it for Danish, Norwegian, and Faroese text (København, smør, børn). Prefer ø in HTML. Do not confuse it with empty set ∅ or diameter ⌀.
HTML entities (ø, ø, or ø) go in markup. The CSS escape \00F8 goes in stylesheet strings (usually content on ::before/::after).
No. ø (U+00F8) is lowercase; Ø (U+00D8, Ø) is uppercase. Empty set ∅ is U+2205. O with stroke and acute ǿ is U+01FF — a different letter.
🤔
Did you know?
Lowercase o with stroke is Unicode U+00F8 (decimal 248) — LATIN SMALL LETTER O WITH STROKE in Latin-1 Supplement. HTML5 provides ø — the most readable form. Capital is Ø (Ø, U+00D8). Essential for Danish, Norwegian, and Faroese (e.g. København, smør).
