Fraction 4 by 5 (⅘) is the Unicode character at U+2158 in Number Forms. Official name: VULGAR FRACTION FOUR FIFTHS. It is one precomposed fraction glyph — not the three characters 4/5.
Remember
Character ⅘
Unicode U+2158
Named entity ⅘
Hex entity ⅘
Decimal ⅘
CSS escape \2158
Meaning vulgar fraction four fifths (4/5)
Not the same 4/5 (three chars) · ⅗ (3/5) · ⅕ (1/5)
Prefer ⅘ in HTML for readable markup. You can also use ⅘, ⅘, or type ⅘ in a UTF-8 document.
Built with Named: ⅘
Built with Hex: ⅘
Built with Decimal: ⅘
Built with CSS: ⅘
Typed: ⅘
Share: ⅘ of total
Math: 5 × ⅘ = 4
How It Works
1. Named:⅘ is the HTML5 name for U+2158 → ⅘.
2. Hex:⅘ inserts the same code point by hexadecimal value.
3. Decimal: same code point as 8536 → ⅘. Same visual as named/hex.
4. CSS: use \2158 in content (not an HTML entity). #point::after appends ⅘.
5. Typed: paste ⅘ in a UTF-8 document when you need the four-fifths glyph as one character.
Pitfalls & Tips
Common mistakes when working with fraction 4 by 5.
Name
Prefer ⅘
The named entity is clear and standard. Avoid inventing names like &fourfifths;.
4/5
Not three characters
Typing 4/5 creates three code points. ⅘ is one Number Forms character.
⅗
Not three fifths
Three fifths is ⅗ (U+2157, ⅗). Use it when you mean 3/5, not 4/5.
Font
Font coverage
Some fonts omit Number Forms fractions. If ⅘ is missing, fall back to 4/5 or a font with Number Forms coverage.
CSS vs HTML
Do not mix escapes
\2158 belongs in CSS strings. ⅘ / ⅘ / ⅘ belong in HTML.
a11y
Add accessible text
Screen readers may not announce ⅘ clearly. Prefer aria-label="four fifths" or nearby prose when the fraction carries meaning.
Semicolon
End references
Always finish entities with ; — write ⅘, not &frac45.
Compatibility
Browser Support
Fraction 4 by 5 (U+2158) and its entity forms (⅘, ⅘, ⅘, CSS \\2158) are supported in all mainstream browsers. Visible glyphs depend on Number Forms font coverage.
✓ Universal support
Fraction 4 By 5 (⅘)
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+2158Full support
Bottom line: Prefer ⅘ in HTML. Use ⅘ / ⅘ when numeric form is required, and \\2158 only inside CSS content.
Remember
Key Takeaways
Unicode: fraction 4 by 5 is U+2158 (decimal 8536) — glyph ⅘.
HTML: prefer ⅘ — also ⅘ / ⅘ / type ⅘.
Use ⅘ (named), ⅘ (hex), ⅘ (decimal), type ⅘ directly in UTF-8, or the CSS escape \2158 in content.
U+2158 (VULGAR FRACTION FOUR FIFTHS). Hex 2158, decimal 8536. It belongs to the Number Forms block (U+2150–U+218F).
Yes. HTML5 defines ⅘ for U+2158. Prefer it for readable markup.
Use it in math, education, and everyday text when you want the single four-fifths glyph. Prefer typing 4/5 as three characters when plain ASCII is required.
HTML entities (⅘, ⅘, or ⅘) go in markup. The CSS escape \2158 goes in stylesheet strings (usually content on ::before/::after).
No. U+2158 is one character (⅘). Typing 4/5 creates three characters. Three fifths is U+2157 (⅗).
🤔
Did you know?
Fraction 4 by 5 is Unicode U+2158 (decimal 8536) — glyph ⅘ (VULGAR FRACTION FOUR FIFTHS) in Number Forms. HTML5 named entity: ⅘. Prefer the named form when you want readable markup. It is one precomposed character, not 4/5 as three characters. Related fractions include three fifths (⅗) and one fifth (⅕).
