Fraction 1 by 3 (⅓) is the Unicode character at U+2153 in Number Forms. Official name: VULGAR FRACTION ONE THIRD. It is one precomposed fraction glyph — not the three characters 1/3.
Remember
Character ⅓
Unicode U+2153
Named entity ⅓
Hex entity ⅓
Decimal ⅓
CSS escape \2153
Meaning vulgar fraction one third (1/3)
Not the same 1/3 (three chars) · ½ (1/2) · ⅔ (2/3)
Prefer ⅓ in HTML for readable markup. You can also use ⅓, ⅓, or type ⅓ in a UTF-8 document.
Built with Named: ⅓
Built with Hex: ⅓
Built with Decimal: ⅓
Built with CSS: ⅓
Typed: ⅓
Recipe: ⅓ cup sugar
Math: 3 ⅓ = 1
How It Works
1. Named:⅓ is the HTML5 name for U+2153 → ⅓.
2. Hex:⅓ inserts the same code point by hexadecimal value.
3. Decimal: same code point as 8531 → ⅓. Same visual as named/hex.
4. CSS: use \2153 in content (not an HTML entity). #point::after appends ⅓.
5. Typed: paste ⅓ in a UTF-8 document when you need the one-third glyph as one character.
Pitfalls & Tips
Common mistakes when working with fraction 1 by 3.
Name
Prefer ⅓
The named entity is clear and standard. Avoid inventing names like &onethird;.
1/3
Not three characters
Typing 1/3 creates three code points. ⅓ is one Number Forms character.
⅔
Not two thirds
Two thirds is ⅔ (U+2154). Use it when you mean 2/3, not 1/3.
Font
Font coverage
Some fonts omit Number Forms fractions. If ⅓ is missing, fall back to 1/3 or a font with Number Forms coverage.
CSS vs HTML
Do not mix escapes
\2153 belongs in CSS strings. ⅓ / ⅓ / ⅓ belong in HTML.
a11y
Add accessible text
Screen readers may not announce ⅓ clearly. Prefer nearby prose (for example “one third”) when the fraction carries meaning.
Semicolon
End references
Always finish entities with ; — write ⅓, not &frac13.
Compatibility
Browser Support
Fraction 1 by 3 (U+2153) and its entity forms (⅓, ⅓, ⅓, CSS \\2153) are supported in all mainstream browsers. Visible glyphs depend on Number Forms font coverage.
✓ Universal support
Fraction 1 By 3 (⅓)
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+2153Full support
Bottom line: Prefer ⅓ in HTML. Use ⅓ / ⅓ when numeric form is required, and \\2153 only inside CSS content.
Remember
Key Takeaways
Unicode: fraction 1 by 3 is U+2153 (decimal 8531) — glyph ⅓.
HTML: prefer ⅓ — also ⅓ / ⅓ / type ⅓.
Use ⅓ (named), ⅓ (hex), ⅓ (decimal), type ⅓ directly in UTF-8, or the CSS escape \2153 in content.
U+2153 (VULGAR FRACTION ONE THIRD). Hex 2153, decimal 8531. It belongs to the Number Forms block (U+2150–U+218F).
Yes. HTML5 defines ⅓ for U+2153. Prefer it for readable markup.
Use it in recipes, math, and everyday text when you want the single one-third glyph. Prefer typing 1/3 as three characters when plain ASCII is required.
HTML entities (⅓, ⅓, or ⅓) go in markup. The CSS escape \2153 goes in stylesheet strings (usually content on ::before/::after).
No. U+2153 is one character (⅓). Typing 1/3 creates three characters. Two thirds is U+2154 (⅔).
🤔
Did you know?
Fraction 1 by 3 is Unicode U+2153 (decimal 8531) — glyph ⅓ (VULGAR FRACTION ONE THIRD) in Number Forms. HTML5 named entity: ⅓. Prefer the named form when you want readable markup. It is one precomposed character, not 1/3 as three characters. Related fractions include one half (½) and two thirds (⅔).
