Punycode Converter

Convert between Unicode domain names and Punycode (IDN / ACE encoding per RFC 3492)

All processing happens in your browser. No data is uploaded.

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Punycode Converter

Convert between Unicode domain names and Punycode (IDN / ACE encoding per RFC 3492)

🔒All processing happens in your browser. No data is uploaded.

Unicode → Punycode

Punycode → Unicode

Unicode Domain

e.g. muenchen.de or 例え.テスト.jp

Punycode Output

About Punycode

Punycode is a way to represent Unicode characters using only the ASCII characters allowed in DNS hostnames. Internationalized domain names (IDN) are encoded with an xn-- prefix. This tool implements the Bootstring algorithm defined in RFC 3492.