HTML Entity for Uppercase A Macron (Ā)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+0100
HTML Entity for Uppercase A Macron tutorial illustration

What You'll Learn

How to display the uppercase A with macron (Ā) in HTML using named entity, hexadecimal, decimal, and CSS escape methods. The macron indicates a long vowel and is used in Latvian, Lithuanian, Latin, Māori, and linguistic notation. It is U+0100 in the Latin Extended-A block.

Render it with Ā, Ā, Ā, or CSS escape \100. The named entity Ā is often the most readable option in HTML source.

⚡ Quick Reference — Uppercase A Macron Entity

Unicode U+0100

Latin Extended-A

Hex Code Ā

Hexadecimal reference

HTML Code Ā

Decimal reference

Named Entity Ā

Most readable option

Reference Table
Name           Value
────────────   ──────────
Unicode        U+0100
Hex code       Ā
HTML code      Ā
Named entity   Ā
CSS code       \100
Meaning        Latin capital letter A with macron
Related        U+0101 = ā (lowercase)
Block          Latin Extended-A (U+0100–U+017F)
1

Complete HTML Example

A simple example showing the uppercase A macron (Ā) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\100";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x100;</p>
<p>Symbol (decimal): &#256;</p>
<p>Symbol (named): &Amacr;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The uppercase A macron (Ā) and the named entity &Amacr; are supported in modern browsers when UTF-8 is used:

Chrome1+
Firefox1+
Safari1+
Edge12+
Opera4+
Android4.4+
iOS Safari1+

👀 Live Preview

See the uppercase A macron (Ā) in language and content contexts:

Large glyphĀ
Latvian / LithuanianLong vowel Ā
MāoriĀ (long A)
Named entity&Amacr; renders as Ā
Numeric refs&#x100; &#256; &Amacr; \100

🧠 How It Works

1

Hexadecimal Code

&#x100; uses the Unicode hexadecimal value 100 to display the character. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#256; uses the decimal Unicode value 256 to display the same character. A common method for Latin Extended-A characters.

HTML markup
3

Named Entity

&Amacr; is the standard named entity for Ā—readable in source HTML and part of the HTML5 entity set.

HTML markup
4

CSS Entity

\100 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All four methods produce the glyph: Ā. Unicode U+0100 sits in Latin Extended-A. Lowercase equivalent: U+0101 (&amacr;). Do not confuse with plain A (U+0041) or the combining macron alone.

✅

Use Cases

The uppercase A macron (Ā) is commonly used in:

🇯🇻 Latvian & Lithuanian

Essential in Baltic languages where Ā marks a long vowel sound.

🇷 Latin

Used in Latin texts and dictionaries to indicate long vowels (macron notation).

🌐 Internationalization

Websites and apps for Baltic, Māori, or other macron-using languages.

🔤 Linguistics

Phonetic transcriptions and language learning materials using macron diacritics.

📚 Māori & Pacific

Correct spelling in Māori and related orthographies using long vowels.

📄 Publishing

Academic, editorial, and dictionary content with extended Latin characters.

🔍 Search & SEO

Correct rendering so users can find content with proper macron spelling.

💡 Best Practices

Do

  • Use &Amacr; in HTML when possible for readability
  • Serve pages as UTF-8; you can also type Ā directly in UTF-8 source
  • Set appropriate lang attributes (e.g. lang="lv", lang="mi")
  • Use fonts that support Latin Extended-A (U+0100–U+017F)
  • Distinguish Ā (macron) from plain A (U+0041) and Ă (breve)

Don’t

  • Substitute plain A when Ā is required for correct spelling
  • Confuse Ā (macron) with Ă (breve) or ¯ (combining macron alone)
  • Put CSS escape \100 in HTML text nodes
  • Assume all fonts render Latin Extended-A macron glyphs
  • Omit UTF-8 encoding on pages with extended Latin characters

Key Takeaways

1

Four references render Ā; named entity is most readable

&#x100; &#256; &Amacr;
2

For CSS stylesheets, use the escape in the content property

\100
3

Unicode U+0100 — LATIN CAPITAL LETTER A WITH MACRON

4

Essential for Latvian, Lithuanian, Latin, Māori, and i18n content

5

Previous: Uppercase A Inverted Breve (Ȃ)   Next: Uppercase A Ogonek

❓ Frequently Asked Questions

Use &Amacr; (named), &#x100; (hex), &#256; (decimal), or \100 in CSS content. The named entity &Amacr; is the most readable for HTML content.
U+0100 (LATIN CAPITAL LETTER A WITH MACRON). Latin Extended-A block. Hex 100, decimal 256. Used in Latvian, Lithuanian, Latin, Māori, and linguistic notation.
When writing Latvian, Lithuanian, Latin long vowels, Māori, or other languages that use the macron for long vowels, plus phonetic and linguistic notation.
HTML code (&#256; or &#x100;) or the named entity &Amacr; is used in HTML content. The CSS entity (\100) is used in CSS, e.g. in the content property of pseudo-elements. Both produce Ā but in different contexts.
Yes. The named HTML entity is &Amacr;. It is part of the standard HTML5 entity set and is well supported. You can also use &#256; or &#x100; for numeric references.

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About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

  • Experience 12 years building web and cloud systems
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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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