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Punycode / IDN Converter

Convert internationalised domain names to punycode and back.

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About the Punycode / IDN Converter

Convert Unicode hostnames such as münchen.de into their ASCII punycode form (xn--mnchen-3ya.de) and decode xn-- labels back into readable text. Useful for DNS records, certificates, email routing and spotting look-alike phishing domains.

Examples

Unicode to punycode

münchen.de

Output

xn--mnchen-3ya.de

Keyboard shortcuts

  • Copy the main outputCtrl / ⌘ + Shift + C
  • Download the resultCtrl / ⌘ + S
  • Share this toolCtrl / ⌘ + Shift + S
  • Reset the inputsAlt + R
  • Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-17 · Runs entirely in your browser