What is the difference between Em Dash and Katakana-hiragana Prolonged Sound Mark?

Em Dash is U+2014 in the General Punctuation 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 Em Dash?

The HTML entity for Em Dash (U+2014) is —.

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 Em Dash and Katakana-hiragana Prolonged Sound Mark the same Unicode character?

No. Em Dash is U+2014 (decimal 8212) and Katakana-hiragana Prolonged Sound Mark is U+30FC (decimal 12540). They are separate codepoints.

What are the UTF-8 encodings of Em Dash and Katakana-hiragana Prolonged Sound Mark?

Em Dash (U+2014) encodes as E2 80 94 in UTF-8. Katakana-hiragana Prolonged Sound Mark (U+30FC) encodes as E3 83 BC in UTF-8.

Em Dash 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.

—

Em Dash

U+2014

Full details →

ー

Katakana-hiragana Prolonged Sound Mark

U+30FC

Full details →

Property Comparison

Property	Em Dash	Katakana-hiragana Prolonged Sound Mark
Codepoint	`U+2014`	`U+30FC`
Decimal	`8212`	`12540`
HTML Entity	`—`	`ー`
HTML Decimal	`—`	`ー`
HTML Hex	`—`	`ー`
UTF-8	`E2 80 94`	`E3 83 BC`
UTF-16	`20 14`	`30 FC`
UTF-32	`00002014`	`000030FC`
CSS Escape	`\2014`	`\30FC`
JS Escape	`\u2014`	`\u30FC`
Python Escape	`\u2014`	`\u30FC`
URL Encoded	`%E2%80%94`	`%E3%83%BC`
Category	`Dash Punctuation (Pd)`	`Modifier Letter (Lm)`
Block	`General Punctuation`	`Katakana`
Script	`Common`	`Common`
Bidi Class	`ON`	`L`
Unicode Version	`1.1`	`1.1`

Rows highlighted in amber differ between the two characters.

Common Comparisons

Frequently confused character pairs.

Em Dash vs En Dash 2014 / 2013 Hyphen-Minus vs Minus Sign 002D / 2212 Copyright vs Sound Recording Copyright 00A9 / 2117 Latin A vs Greek Alpha 0041 / 0391 Degree Sign vs Masculine Ordinal 00B0 / 00BA Left vs Right Single Quotation Mark 2018 / 2019 Left vs Right Double Quotation Mark 201C / 201D Multiplication Sign vs Letter x 00D7 / 0078 Right Quotation Mark vs Apostrophe 2019 / 0027 Horizontal Ellipsis vs Three Dots 2026 / 0020