HTML Entity for Not Tilde (≁)

Beginner

5 min read

Updated: Sep 2026

1 example

Unicode U+2241

HTML Entity for not tilde (U+2241) tutorial illustration

Definition

What Is the Not Tilde Entity?

Not tilde (≁) is the Mathematical Operators character at Unicode U+2241 (NOT TILDE). It negates the tilde operator (&sim;, ∼) used for similarity or equivalence in mathematics.

Remember

Character     ≁
Unicode       U+2241
Named entity  &nsim;
Hex entity    &#x2241;
Decimal       &#8769;
CSS escape    \2241
Affirmative   &sim; (∼, U+223C)

Named, hex, decimal, CSS, and a typed character all produce the same glyph: ≁. Prefer &nsim; in HTML source for clarity.

Reference

Quick Reference

One table for every form you will actually use.

Form	Code	Where it goes
Named entity	`&nsim;`	HTML markup (best default)
Hex entity	`≁`	HTML markup
Decimal entity	`≁`	HTML markup
CSS escape	`\2241`	Stylesheet `content`
Direct character	`≁`	UTF-8 HTML text

When to Use Which

Situation	Use
Readable HTML source	`&nsim;`
Numeric entity required	`≁` or `≁`
Generated text via `::before` / `::after`	`content: "\2241"`
Affirmative ∼	`&sim;` — see Tilde
ASCII keyboard tilde	Type `~` (U+007E) — not a math operator

See it

Live Preview

Not tilde in similarity and comparison contexts.

Relation a ≁ b

Large glyph ≁

Named entity &nsim; → ≁

vs ∼ / ~ / ≄ ≁ | ∼ | ~ | ≄

With entities Named: ≁ | Hex: ≁ | Decimal: ≁

Code

Complete HTML Example

One page that shows this symbol with named, hex, decimal, and CSS forms. Use View Output or open the live editor.

Named + Hex + Decimal + CSS

Four ways to produce ≁ in a single document.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Not Tilde (&nsim;)</title>
  <style>
    #point::after {
      content: "\2241";
    }
  </style>
</head>
<body>
  <p>Using Named Entity: &nsim;</p>
  <p>Using Hex Code: &#x2241;</p>
  <p>Using HTML Code: &#8769;</p>
  <p id="point">Using CSS Entity: </p>
  <p>Example: a &nsim; b</p>
</body>
</html>

Try It Yourself

How It Works

1. Named: &nsim; is the clearest HTML form and renders ≁.

2. Hex: U+2241 → ≁ in HTML. Same result as the named entity.

3. Decimal: same code point as 8769 → ≁. Same result as hex.

4. CSS: use \2241 in content (not an HTML entity). #point::after appends that ≁ after the paragraph text.

Pitfalls & Tips

Common mistakes when working with the not-tilde entity.

Pair

`&nsim;` ≠ `&sim;`

&nsim; is the negation. &sim; is the affirmative tilde operator (∼).

Look-alikes

Not `~` or `&nsime;`

ASCII ~ is U+007E. &nsime; is ≄ (not asymptotically equal) — a different relation.

CSS vs HTML

Do not mix escapes

\2241 belongs in CSS. &nsim; / ≁ / ≁ belong in HTML.

Fonts

Glyph coverage

Some fonts omit Mathematical Operators. If ≁ looks like a box, switch to a math-capable font.

Encoding

Declare UTF-8

If you paste ≁ directly, keep <meta charset="UTF-8"> so the file is not misread.

Semicolon

End references

Always finish with ; — write &nsim;, not &nsim.

Compatibility

Browser Support

Not tilde (U+2241) and its entity forms (&nsim;, ≁, ≁, CSS \\2241) are supported in all modern browsers. Glyph availability depends on the font.

✓ Universal encoding

Not Tilde (&nsim;)

Encode with named, hex, decimal, or CSS escape — or paste ≁ directly in UTF-8 HTML.

100% Browser coverage

Google Chrome Supported

Yes

Microsoft Edge Supported

Yes

Mozilla Firefox Supported

Yes

Apple Safari Supported

Yes

Opera Supported

Yes

Internet Explorer All versions

Yes

U+2241 Full support

Bottom line: Prefer &nsim; for readable HTML. Use \\2241 only inside CSS content.

Remember

Key Takeaways

Unicode: this character is U+2241 (decimal 8769).
HTML: prefer &nsim; — or use ≁ / ≁.
CSS: use \2241 inside content for generated text.
Watch out: &nsim; ≠ &sim; ≠ ~ ≠ &nsime;.

One line: U+2241 → &nsim; / ≁ / ≁ / CSS \2241.

Frequently Asked Questions

How do I display not tilde (≁) in HTML using entities?

Use &nsim; (named), ≁ (hex), ≁ (decimal), or the CSS escape \2241 in the content property. All render ≁. Prefer &nsim; in HTML source.

What is the Unicode value for nsim?

U+2241 (NOT TILDE). Hex 2241, decimal 8769. It belongs to the Mathematical Operators block (U+2200–U+22FF).

Is there a named HTML entity for U+2241?

Yes. &nsim; is the HTML5 named entity for ≁. Related: &sim; for ∼ (U+223C) and &nsime; for ≄ (U+2244).

When should I use this HTML entity?

Use it in mathematics and formal notation when you need to negate similarity (not similar to / not tilde). Prefer &nsim; for readable source.

What is the difference between HTML code and CSS entity for U+2241?

HTML entities (&nsim;, ≁, or ≁) go in markup. The CSS escape \2241 is used in stylesheets (usually in the content property of ::before/::after). Both render ≁.

How is ≁ different from ∼, ~, or ≄?

∼ (&sim;, U+223C) is the tilde operator (similarity). ~ (U+007E) is the ASCII keyboard tilde. ≁ (&nsim;) negates similarity. ≄ (&nsime;, U+2244) is not asymptotically equal — a different relation.

Did you know?

Not tilde (≁) is Unicode U+2241 (decimal 8769) in Mathematical Operators. HTML5 provides &nsim; — the most readable form. It negates the tilde operator (&sim;, ∼, U+223C). Distinct from ASCII ~ (U+007E) and from &nsime; (≄, not asymptotically equal).

Next: Not Tilde Above

Learn the HTML entity for the not tilde above combining mark — next in this sequence.

Continue tutorial →

About the author

Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

Experience 12 years building web and cloud systems
Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

AWS Certified Developer – Associate (Credly)

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