HTML Entity for Uppercase A Macron (Ā)

Beginner

5 min read

Updated: Sep 2026

1 example

Unicode U+0100

HTML Entity for uppercase A macron (U+0100) tutorial illustration

Definition

What Is Uppercase A Macron?

Uppercase A macron (Ā) is the Unicode character at U+0100 in Latin Extended-A. Official name: LATIN CAPITAL LETTER A WITH MACRON — a capital A with a macron (horizontal bar), used for long A in Latvian, Lithuanian, Latin, and Māori.

Remember

Character     Ā
Unicode       U+0100
Named entity  &Amacr;  (capital A)
Hex entity    &#x100;
Decimal       &#256;
CSS escape    \0100
Not the same  ā · Â · A

Prefer &Amacr; in HTML markup — the capital A in the name matters. Numeric forms and typing Ā in UTF-8 also work. For the lowercase letter, use &amacr; (ā).

Reference

Quick Reference

One table for every form you will actually use.

Form	Code	Where it goes
Named entity	`&Amacr;`	HTML markup (preferred)
Direct character	`Ā`	HTML text (UTF-8)
Hex entity	`Ā`	HTML markup
Decimal entity	`Ā`	HTML markup
CSS escape	`\0100`	Stylesheet `content`
Lowercase (related)	ā (U+0101)	Named `&amacr;`

When to Use Which

Situation	Use
Capital A with macron (Ā)	`&Amacr;` or type `Ā`
Lowercase a with macron (ā)	ā (`&amacr;`)
Capital A with circumflex (Â)	Â (`Â`)
Plain capital A	A (U+0041)
Generated text via `::before` / `::after`	`content: "\0100"`

See it

Live Preview

Uppercase A macron rendered alone and next to related letters.

Large glyph Ā

Notation Māori long A: Ā

Compared Ā | ā | Â

Hint Compare: Capital Ā | Lower ā | Circumflex Â

With entities Named: Ā | Hex: Ā | Decimal: Ā

Code

Complete HTML Example

One page that shows the letter with named, hex, decimal, CSS escape, and a typed character. Use View Output or open the live editor.

Named + Hex + Decimal + CSS + Typed

Five ways to produce Ā, plus a short Māori label example.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Uppercase A Macron (Ā)</title>
  <style>
    #point::after {
      content: "\0100";
    }
  </style>
</head>
<body>
  <p>Using Named Entity: &Amacr;</p>
  <p>Using Hex Code: &#x100;</p>
  <p>Using HTML Code: &#256;</p>
  <p id="point">Using CSS Entity: </p>
  <p>Typed directly: Ā</p>
  <p lang="mi">M&amacr;ori long A: &Amacr;</p>
</body>
</html>

Try It Yourself

How It Works

1. Named: &Amacr; (capital A) is the clearest HTML form for U+0100. Lowercase &amacr; is a different character (ā).

2. Hex: U+0100 → Ā in HTML. Same glyph as the named entity.

3. Decimal: same code point as 256 → Ā. Same glyph as hex and named.

4. CSS: use \0100 in content (not an HTML entity). #point::after appends that Ā after the paragraph text.

5. Typed / label: paste Ā in UTF-8, or write M&amacr;ori long A: &Amacr; with lang="mi".

Pitfalls & Tips

Common mistakes when working with U+0100.

Case

&Amacr; ≠ &amacr;

&Amacr; → Ā (capital). &amacr; → ā (lowercase). Entity names are case-sensitive.

vs Â

Not a circumflex

Â (Â) is a pointed hat. Macron is a flat bar above A (Ā).

vs A

Not a plain capital A

ASCII A (U+0041) has no length mark. Use &Amacr; when the language requires a long A.

Fonts

Latin Extended-A coverage

Most modern fonts include Ā. Prefer UTF-8 encoding so typed characters and entities both render correctly.

CSS vs HTML

Do not mix escapes

\0100 belongs in CSS strings. &Amacr; / Ā / Ā belong in HTML.

A11y

Mark the language

When Ā appears in real words, set lang on the element or page so screen readers handle pronunciation correctly.

Compatibility

Browser Support

Uppercase A macron (U+0100) and its entity forms (&Amacr;, Ā, Ā, CSS \\0100) are supported in all mainstream browsers. Visible glyphs are standard in Latin Extended-A capable fonts.

✓ Universal support

Uppercase A Macron (Ā)

Encode with named, hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.

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+0100 / &Amacr; Full support

Bottom line: Prefer &Amacr; (capital A) in HTML. Use \\0100 only inside CSS content. Do not confuse with &amacr; (ā).

Remember

Key Takeaways

Unicode: uppercase A macron is U+0100 (decimal 256) — glyph Ā.
HTML: prefer &Amacr; (capital A) — also Ā / Ā.
CSS: use \0100 inside content for generated text.
Meaning: Ā is capital macron — not ā (&amacr;), not Â (Â).

One line: U+0100 → &Amacr; / Ā / Ā / CSS \0100.

Frequently Asked Questions

How do I display Ā in HTML?

Use &Amacr; (named), Ā (hex), Ā (decimal), type Ā directly in UTF-8, or the CSS escape \0100 in content. Prefer &Amacr; in normal HTML.

What is the Unicode value for uppercase A macron?

U+0100 (LATIN CAPITAL LETTER A WITH MACRON). Hex 100, decimal 256. It belongs to Latin Extended-A (U+0100–U+017F).

Is there a named HTML entity for U+0100?

Yes. Use &Amacr; (capital A). Numeric forms Ā and Ā also work. Note: &amacr; (lowercase) is a different letter (ā).

Is Ā the same as ā or Â?

No. Ā is U+0100 (&Amacr;, capital macron). ā is U+0101 (&amacr;). Â is U+00C2 (Â, capital circumflex).

When should I use &Amacr;?

Use it for Latvian, Lithuanian, classical Latin, Māori, and other languages that need Ā for a long A vowel in titles, names, and uppercase text — not as a substitute for plain A.

What is the difference between HTML code and CSS entity for U+0100?

HTML entities (&Amacr;, Ā, or Ā) go in markup. The CSS escape \0100 goes in stylesheet strings (usually content on ::before/::after).

Did you know?

Uppercase A macron is Unicode U+0100 (decimal 256) — glyph Ā in Latin Extended-A (U+0100–U+017F). HTML5 names it &Amacr; (capital A). Official name: LATIN CAPITAL LETTER A WITH MACRON. Lowercase is &amacr; (ā, U+0101). Common in Latvian, Lithuanian, classical Latin, and Māori (long A).

Next: Uppercase A Ogonek

Learn the HTML entity for uppercase A with ogonek (U+0104).

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.

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