Is phi (ɸ) the same as Greek phi (φ)?

No. U+0278 (ɸ) is LATIN SMALL LETTER PHI in Latin Extended-B. U+03C6 (φ) is GREEK SMALL LETTER PHI. U+03A6 (Φ) is GREEK CAPITAL LETTER PHI. They are different code points.

What’s the difference between HTML code and CSS entity for ɸ?

HTML references (ɸ or ɸ) go in markup. The CSS escape \0278 is used in stylesheets (e.g. content on ::before/::after). Both render ɸ.

HTML Entity for Phi (ɸ)

Q: How do I display phi (ɸ) in HTML?

Use ɸ (hex), ɸ (decimal), or \0278 in CSS content. There is no named HTML entity for U+0278. In UTF-8 you can also type ɸ directly.

Q: What is the Unicode value for phi (U+0278)?

U+0278 (LATIN SMALL LETTER PHI) in the Latin Extended-B block. Hex 0278, decimal 632. Not the same as Greek small phi U+03C6 (φ) or Greek capital Phi U+03A6 (Φ).

Q: When should I use phi (ɸ) in HTML?

In phonetic and linguistic notation, IPA extensions, academic papers, and Unicode references requiring the Latin phi letter—not for Greek mathematics or the golden-ratio symbol.

Beginner

⏱️ 5 min read

📚 Updated: Jun 2026

🎯 1 Code Example

Unicode U+0278

HTML entity for Latin small letter phi (U+0278) — hex, decimal, and CSS tutorial

What You'll Learn

How to display the Latin small letter phi (ɸ) in HTML using hexadecimal, decimal, and CSS escape methods. This character is U+0278 (LATIN SMALL LETTER PHI) in the Latin Extended-B block (U+0180–U+024F)—used in phonetic notation, linguistics, and academic content.

Render it with ɸ, ɸ, or CSS escape \0278. There is no named HTML entity. Do not confuse ɸ with Greek small phi φ (U+03C6) or Greek capital Phi Φ (U+03A6, often used for the golden ratio in math).

⚡ Quick Reference — Phi

Unicode U+0278

Latin Extended-B

Hex Code ɸ

Hexadecimal reference

HTML Code ɸ

Decimal reference

Named Entity —

Use numeric codes only

Reference Table

Name           Value
────────────   ──────────
Unicode        U+0278
Hex code       &#x0278;
HTML code      &#632;
Named entity   (none)
CSS code       \0278
Meaning        Latin small letter phi
Not the same   U+03C6 = φ (Greek small phi)
               U+03A6 = Φ (Greek capital Phi)
Block          Latin Extended-B (U+0180–U+024F)

Complete HTML Example

A simple example showing ɸ using hexadecimal code, decimal HTML code, and a CSS content escape:

html

<!DOCTYPE html>
<html>
<head>
 <style>
  #point::after{
   content: "\0278";
  }
 </style>
</head>
<body>
<p>Phi (hex): &#x0278;</p>
<p>Phi (decimal): &#632;</p>
<p>Phonetic: ɸ Latin phi</p>
<p id="point">Phi (CSS): </p>
</body>
</html>

Try it Yourself

🌐 Browser Support

U+0278 is supported in modern browsers when rendered with a Unicode-capable font:

Chrome1+

Firefox1+

Safari1+

Edge12+

Opera4+

Android4.4+

iOS Safari1+

👀 Live Preview

See the Latin phi letter (ɸ) in phonetic and academic contexts:

Single glyph ɸ

Phonetic /ɸɑ/ transcription

Not the same as Greek φ | Greek Φ

Neighbor Closed omega ɷ (U+0277)

Numeric refs ɸ ɸ \0278

🧠 How It Works

Hexadecimal Code

ɸ uses the Unicode hexadecimal value 0278 to display the Latin phi letter.

HTML markup

Decimal HTML Code

ɸ uses the decimal Unicode value 632 for the same character.

HTML markup

CSS Entity

\0278 is used in CSS stylesheets in the content property of pseudo-elements.

CSS stylesheet

Same visual result

All three methods produce ɸ. Unicode U+0278 in Latin Extended-B. Previous: Peso Sign (₱).

✅

Use Cases

The Latin phi letter (ɸ) is commonly used in:

📚 Phonetics

IPA and phonetic transcription guides online.

🎓 Linguistics

Academic papers, textbooks, and language resources.

📄 Unicode docs

Character pickers and Latin Extended-B references.

📝 Scientific content

Notation requiring the Latin phi glyph, not Greek math symbols.

🇮🇪 Orthographies

Specialized Latin-script language materials.

♿ Accessibility

Pair ɸ with descriptive text; do not rely on the glyph alone.

💡 Best Practices

Do

Use ɸ or ɸ consistently per project
Set <meta charset="utf-8"> for reliable rendering
Pick the correct phi: Latin ɸ vs Greek φ / Φ
Use a Unicode-capable font for Latin Extended-B glyphs
Test rendering across browsers and devices

Don’t

Confuse ɸ with Greek φ (U+03C6) or Φ (U+03A6)
Use padded Unicode notation like U+00278—the correct value is U+0278
Use CSS escape \0278 in HTML text nodes
Expect a named entity—none exists for U+0278
Assume every font renders Latin Extended-B identically—test your typeface

Key Takeaways

Two HTML numeric references render ɸ

ɸ ɸ

For CSS stylesheets, use \0278 in the content property

Unicode U+0278 — LATIN SMALL LETTER PHI

Distinct from Greek φ (U+03C6) and Φ (U+03A6)

Previous: Peso Sign (₱) Next: Pinwheel Star

❓ Frequently Asked Questions

How do I display phi (ɸ) in HTML?

Use ɸ (hex), ɸ (decimal), or \0278 in CSS content. There is no named entity. All render ɸ.

What is the Unicode value for phi (U+0278)?

U+0278 (LATIN SMALL LETTER PHI). Latin Extended-B block. Hex 0278, decimal 632.

Is this the same as Greek phi (φ)?

No. ɸ (U+0278) is a Latin letter in Extended-B. φ (U+03C6) is GREEK SMALL LETTER PHI. Φ (U+03A6) is GREEK CAPITAL LETTER PHI used in mathematics.

When should I use phi (ɸ) in HTML?

For phonetic notation, linguistics, IPA content, academic papers, and Unicode documentation when the source specifies U+0278 Latin phi.

Why is there no named HTML entity for phi?

Named HTML entities cover a subset of common characters. U+0278 uses numeric hex or decimal codes or CSS escapes, which is standard for Latin Extended-B letters.

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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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