Free Online Tool

Punycode Converter

Encode internationalized domain names to ASCII-compatible format.

Punycode Converter

Convert internationalized domain names (IDN) to ASCII-compatible encoding

Mode

Domain Names (Unicode)

Characters: 0Lines: 0

Punycode Output

ASCII-safe encoding

Example Domains

Click any example to load it

münchen.de

German domain with umlaut

日本.jp

Japanese domain

россия.рф

Russian domain (Cyrillic)

中国.cn

Chinese domain

café.com

Domain with accented character

xn--mnchen-3ya.de

Punycode encoded domain

How to Use Punycode Converter

Enter one or more domain names, one per line.
Choose Encode to convert only labels containing non-ASCII characters.
The component prefixes encoded labels with xn-- and leaves ASCII labels unchanged.
Choose Decode to restore labels that begin with xn--.

Punycode represents Unicode domain labels with basic ASCII using RFC 3492 bias adaptation; dots separate labels and are never encoded.

Mixed Unicode and ASCII labels:

münich.com

Output:

xn--mnich-kva.com

Two Unicode labels:

例子.测试

Output:

xn--fsqu00a.xn--0zwm56d

All processing happens in your browser. No data is sent to servers.

No registration, no limits, completely free to use.