What is the difference between Hangul Letter Eu and Katakana-hiragana Prolonged Sound Mark?

Hangul Letter Eu is U+3161 in the Hangul Compatibility Jamo block. Katakana-hiragana Prolonged Sound Mark is U+30FC in the Katakana block. They are distinct Unicode codepoints and may appear visually similar depending on the font.

What is the HTML entity for Hangul Letter Eu?

The HTML entity for Hangul Letter Eu (U+3161) is ㅡ.

What is the HTML entity for Katakana-hiragana Prolonged Sound Mark?

The HTML entity for Katakana-hiragana Prolonged Sound Mark (U+30FC) is ー.

Are Hangul Letter Eu and Katakana-hiragana Prolonged Sound Mark the same Unicode character?

No. Hangul Letter Eu is U+3161 (decimal 12641) and Katakana-hiragana Prolonged Sound Mark is U+30FC (decimal 12540). They are separate codepoints.

What are the UTF-8 encodings of Hangul Letter Eu and Katakana-hiragana Prolonged Sound Mark?

Hangul Letter Eu (U+3161) encodes as E3 85 A1 in UTF-8. Katakana-hiragana Prolonged Sound Mark (U+30FC) encodes as E3 83 BC in UTF-8.

Hangul Letter Eu vs Katakana-hiragana Prolonged Sound Mark

Compare two Unicode characters side by side — encodings, HTML entities, escape sequences, and Unicode properties. Useful for distinguishing visually similar characters like hyphens and dashes, quotation marks, or homoglyphs.

ㅡ

Hangul Letter Eu

U+3161

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ー

Katakana-hiragana Prolonged Sound Mark

U+30FC

Full details →

Property Comparison

Property	Hangul Letter Eu	Katakana-hiragana Prolonged Sound Mark
Codepoint	`U+3161`	`U+30FC`
Decimal	`12641`	`12540`
HTML Entity	`ㅡ`	`ー`
HTML Decimal	`ㅡ`	`ー`
HTML Hex	`ㅡ`	`ー`
UTF-8	`E3 85 A1`	`E3 83 BC`
UTF-16	`31 61`	`30 FC`
UTF-32	`00003161`	`000030FC`
CSS Escape	`\3161`	`\30FC`
JS Escape	`\u3161`	`\u30FC`
Python Escape	`\u3161`	`\u30FC`
URL Encoded	`%E3%85%A1`	`%E3%83%BC`
Category	`Other Letter (Lo)`	`Modifier Letter (Lm)`
Block	`Hangul Compatibility Jamo`	`Katakana`
Script	`Hangul`	`Common`
Bidi Class	`L`	`L`
Unicode Version	`1.1`	`1.1`

Rows highlighted in amber differ between the two characters.

Common Comparisons

Frequently confused character pairs.

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