HTML Entity for Inverted Ohm Sign (℧)

Beginner

6 min read

Updated: Sep 2026

1 example

Unicode U+2127

HTML Entity for Inverted Ohm Sign (℧) tutorial illustration

Definition

What Is the Inverted Ohm Sign Entity?

Inverted Ohm Sign (℧) is the Letterlike Symbols character at Unicode U+2127 (INVERTED OHM SIGN). It denotes conductance — the reciprocal of resistance; the unit is the mho.

Remember

Character     ℧
Unicode       U+2127
Hex entity    &#x2127;
Decimal       &#8487;
Named entity  &mho;
CSS escape    \2127

All of these produce the same glyph: ℧. Prefer &mho; in HTML source for clarity; use hex/decimal when generating entities, and CSS \2127 only in content.

Reference

Quick Reference

One table for every form you will actually use.

Form	Code	Where it goes
Named entity	`&mho;`	HTML markup (best default)
Hex entity	`℧`	HTML markup
Decimal entity	`℧`	HTML markup
CSS escape	`\2127`	Stylesheet `content`
Direct character	`℧`	UTF-8 HTML text

When to Use Which

Situation	Use
Readable engineering HTML source	`&mho;`
Need a numeric entity in HTML	`℧` or `℧`
Generated text via `::before` / `::after`	`content: "\2127"`
UTF-8 page, typing is easy	Type `℧` directly
Resistance (ohm), not conductance	Use Ohm Sign (U+2126) — not ℧

See it

Live Preview

Inverted Ohm Sign in electrical contexts.

Conductance G = 5 ℧ (5 mhos)

Large glyph ℧

Relation G = 1/R, unit ℧

Named entity &mho; → ℧

With entities Hex: ℧ | Decimal: ℧ | Named: ℧

Code

Complete HTML Example

One page that shows Inverted Ohm Sign with hex, decimal, named, and CSS. Use View Output or open the live editor.

Hex + Decimal + Named + CSS

All four ways to produce ℧ in a single document.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Inverted Ohm Sign (℧) in HTML</title>
  <style>
    #point::after {
      content: "\2127";
    }
  </style>
</head>
<body>
  <p>Using Hex Code: &#x2127;</p>
  <p>Using HTML Code: &#8487;</p>
  <p>Using Named Entity: &mho;</p>
  <p id="point">Using CSS Entity: </p>
  <p>Example: G = 5 &mho;</p>
</body>
</html>

Try It Yourself

How It Works

1. Hex: U+2127 → ℧ in HTML. The browser turns it into ℧.

2. Decimal: same code point as 8487 → ℧. Same result as hex.

3. Named: &mho; is the HTML5 name for this character — easiest to read in source.

4. CSS: use \2127 in content (not an HTML entity). #point::after appends that ℧ after the paragraph text.

Pitfalls & Tips

Common mistakes when working with the Inverted Ohm Sign.

Named

Prefer &mho;

Named form is clearer than numeric codes in hand-written HTML.

Units

Conductance ≠ resistance

Use ℧ for conductance (mho). Use ohm (U+2126) or Ω for resistance.

CSS vs HTML

Do not mix escapes

\2127 belongs in CSS. &mho; / ℧ / ℧ belong in HTML.

Siemens still common

Modern SI often uses siemens (S) for conductance; ℧ remains useful in older or niche docs.

Semicolon

End references

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

Default

Type ℧ when you can

On UTF-8 pages you may type ℧ directly; entities help when encoding must be explicit.

Compatibility

Browser Support

Inverted Ohm Sign (U+2127) and its entity forms (&mho;, ℧, ℧, CSS \\2127) are supported in all mainstream browsers.

✓ Universal support

Inverted Ohm Sign (℧)

Use &mho;, or encode with hex, decimal, or CSS escape — same glyph everywhere.

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+2127 / entities Full support

Bottom line: Prefer &mho; in HTML for readability. Use ℧ or ℧ when encoding must be numeric, and \\2127 only inside CSS content.

Remember

Key Takeaways

Unicode: inverted ohm sign is U+2127 (decimal 8487).
HTML: prefer &mho;, or use ℧ / ℧.
CSS: use \2127 inside content for generated text.
Meaning: ℧ = conductance (mho); not the same as ohm resistance.

One line: U+2127 → &mho; / ℧ / ℧ / CSS \2127.

Frequently Asked Questions

How do I display the Inverted Ohm Sign (℧) in HTML using entities?

Use &mho; (named), ℧ (hex), ℧ (decimal), or the CSS escape \2127 in the content property. All render ℧.

What is the Unicode value for Inverted Ohm Sign?

U+2127 (INVERTED OHM SIGN). Hex 2127, decimal 8487. It belongs to the Letterlike Symbols block and denotes conductance (mho).

Is there a named HTML entity for ℧?

Yes. &mho; is the named HTML5 entity for ℧ and is supported in all modern browsers.

When should I use the Inverted Ohm Sign HTML entity?

Use it for electrical conductance (mho unit) in engineering docs, circuit notes, and physics content. Prefer &mho; for readable source. For resistance use the ohm sign (U+2126) or Ω — not ℧.

What is the difference between HTML code and CSS entity for ℧?

HTML entities (&mho;, ℧, or ℧) go in markup. The CSS escape \2127 is used in stylesheets (usually in the content property of ::before/::after). Both render ℧.

How is ℧ different from Ω or the Ohm sign (U+2126)?

℧ (U+2127) is conductance (mho). Ω / U+2126 denote resistance (ohm). Do not swap them — they are inverse quantities.

Did you know?

Inverted Ohm Sign is Unicode U+2127 (decimal 8487). HTML5 provides the named entity &mho; — prefer it for readable conductance markup, or use ℧ / ℧. The unit is the mho (ohm spelled backwards); SI often uses siemens (S) instead.

Next: Inverted Question Mark

Learn the HTML entity for Inverted Question Mark (¿) — next in this sequence.

Inverted Question Mark 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.

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