Approximately equal to (≅) is Unicode U+2245 in the Mathematical Operators block. It is the relation for approximate equality (many courses also read it as congruent). HTML provides the named entity ≅.
Remember
Character ≅
Unicode U+2245
Hex entity ≅
Decimal ≅
Named entity ≅
CSS escape \2245
Not the same ≈ U+2248 · ≡ U+2261 · ≆ U+2246
All of these produce the same glyph: ≅. Prefer ≅ in hand-written HTML; type ≅ in UTF-8 when you can; use numeric or CSS forms for generated content.
Approx. equal using Hex Code: ≅
Approx. equal using HTML Code: ≅
Approx. equal using Named Entity: ≅
Approx. equal using CSS Entity: ≅
Typed directly: ≅
How It Works
1. Hex:U+2245 → ≅ in HTML. The browser turns it into ≅.
2. Decimal: same code point as 8773 → ≅. Same result as hex.
3. Named:≅ is the standard HTML name for U+2245 — clear in source (often glossed “congruent”).
4. CSS: use \2245 in content (not an HTML entity). #point::after appends that ≅ after the paragraph text.
5. Typed ≅: fine in UTF-8 source. All five lines show the same glyph.
Pitfalls & Tips
Common mistakes when working with approximately equal to (≅).
≈
Not almost equal
≅ is approximately equal. For informal “about equal” use ≈.
≡
Not identical to
≡ (U+2261) is a different Mathematical Operators relation (triple bar).
≆
Not “but not actually equal”
≆ (U+2246) means approximately but not actually equal.
CSS vs HTML
Do not mix escapes
\2245 belongs in CSS. ≅ / ≅ belong in HTML.
Fonts
Use math-capable fonts
Some UI fonts omit Mathematical Operators. Prefer fonts with solid math coverage.
Semicolon
End references
Always finish with ; — write ≅, not &cong.
Compatibility
Browser Support
Approximately equal to (U+2245) and its entity forms (≅, ≅, ≅, CSS \\2245) are supported in all mainstream browsers. Glyph availability depends on font support for Mathematical Operators.
✓ Universal support
Approximately Equal To (≅)
Type ≅, or encode with named, hex, decimal, or CSS escape — same glyph 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+2245 / entitiesFull support
Bottom line: Prefer ≅ or a typed ≅ for normal text. Use numeric forms when generating markup, and \\2245 only inside CSS content.
Remember
Key Takeaways
Unicode: approximately equal to is U+2245 (decimal 8773).
Use ≅ (hex), ≅ (decimal), ≅ (named), or the CSS escape \2245 in the content property. All render ≅. You can also paste ≅ directly if your file is UTF-8.
U+2245 (hex 2245, decimal 8773). Unicode names it APPROXIMATELY EQUAL TO. It belongs to the Mathematical Operators block (U+2200–U+22FF).
Yes. ≅ maps to U+2245. Prefer it in hand-written HTML; numeric forms are useful in generated markup.
Use ≅ for approximately equal / congruent-style notation when your curriculum requires it. Use ≈ (U+2248) for almost equal, and ≡ (U+2261) for identical to — different operators.
HTML entities (≅, ≅, or ≅) go in markup. The CSS escape \2245 is used in stylesheets (usually in the content property of ::before/::after). Both render ≅.
Yes in HTML entity naming — ≅ is the named reference for U+2245. Many geometry courses read ≅ as congruent; always match your textbook’s definition.
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Did you know?
Approximately equal to is Unicode U+2245 (decimal 8773) in the Mathematical Operators block. HTML provides ≅ for ≅ (often glossed “congruent” in entity lists). It is not the same as ≈ (almost equal) or ≡ (identical to).
