EmDashSymbol

Emdashsymbol.com (by SymbolCopy) is a clean, browser-based tool focused on the em dash “—”. With one click you can copy the em dash symbol, plus get all the details and usage codes: Unicode, HTML entity, CSS, Alt-code, etc. SymbolCopy

You’ll also find platform-specific input guides (Windows, macOS, Android, iOS) so you know how to type or insert it anywhere. SymbolCopy

Beyond just copying, it explains what the em dash is, how it differs from hyphen/en dash, and when you should use it — like replacing commas or parentheses or adding emphasis in a sentence. SymbolCopy

Overall, it’s a very simple, no-frills reference + utility for writers, designers, coders, students — anyone who needs to use the em dash frequently.