HTML Entity for Measured By (≞)
What You'll Learn
How to display the measured by (≞) symbol in HTML using hexadecimal, decimal, and CSS escape methods. This character is U+225E (MEASURED BY) in the Mathematical Operators block (U+2200–U+22FF)—a relation symbol used in mathematical and technical notation.
Render it with ≞, ≞, or CSS escape \225E. There is no named HTML entity for U+225E. For related angle symbols see Measured Angle (∡) and Angle (∠).
⚡ Quick Reference — Measured By
U+225EMathematical Operators block
≞Hexadecimal reference
≞Decimal reference
—Use numeric codes only
Name Value
──────────── ──────────
Unicode U+225E
Hex code ≞
HTML code ≞
Named entity (none)
CSS code \225E
Related U+2221 = measured angle (∡); U+2243 = asymptotically equal to (≃)Complete HTML Example
This example demonstrates the measured by (≞) using hexadecimal code, decimal HTML code, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point::after{
content: "\225E";
}
</style>
</head>
<body>
<p>Measured By using Hexadecimal: ≞</p>
<p>Measured By using HTML Code: ≞</p>
<p id="point">Measured By using CSS Entity: </p>
</body>
</html>🌐 Browser Support
The measured by symbol is universally supported in modern browsers:
👀 Live Preview
See the measured by (≞) symbol in mathematical contexts:
🧠 How It Works
Hexadecimal Code
≞ uses the Unicode hexadecimal value 225E to display the measured by symbol. The x prefix indicates hexadecimal format.
Decimal HTML Code
≞ uses the decimal Unicode value 8798 to display the same character.
CSS Entity
\225E is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.
Same visual result
All three methods produce: ≞. Unicode U+225E sits in the Mathematical Operators block (U+2200–U+22FF). No named HTML entity—use numeric codes in markup.
Use Cases
The measured by (≞) symbol commonly appears in:
Formal notation for measured-by relations in proofs and textbooks.
Technical specs, CAD annotations, and measurement documentation.
Online math courses, geometry apps, and interactive problem sets.
Scientific articles and lab notes with angular or dimensional notation.
Academic preprints and journals using Unicode math symbols.
HTML entity tutorials and Mathematical Operators documentation.
💡 Best Practices
Do
- Use
≞or≞consistently per project - Distinguish ≞ from = (equals) and ≃ (asymptotically equal)
- Pair with MathML or accessible text for complex formulas
- Serve pages with UTF-8 (
<meta charset="utf-8">) - Test glyph rendering across browsers and math fonts
Don’t
- Confuse ≞ with ≃ (asymptotically equal) or ≈ (almost equal)
- Mix entity styles randomly in one file
- Put CSS escape
\225Ein HTML text nodes - Use HTML entities in JS (use
\u225E) - Use padded Unicode notation like U+0225E—the correct value is
U+225E
Key Takeaways
Two HTML references both render ≞
≞ ≞For CSS stylesheets, use the escape in the content property
\225EUnicode U+225E — MEASURED BY in Mathematical Operators
No named HTML entity—use numeric codes or UTF-8 literal ≞
Related: ∡ (measured angle) and ∠ (angle)
❓ Frequently Asked Questions
≞ (hex), ≞ (decimal), or \225E in CSS content. All produce ≞. There is no named HTML entity for U+225E.U+225E (MEASURED BY). Mathematical Operators block (U+2200–U+22FF). Hex 225E, decimal 8798.≞ or ≞) go directly in markup. The CSS escape \225E is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.≞ or ≞, or type ≞ directly in UTF-8 source files.Explore More HTML Entities!
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