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IDN Punycode Converter

Convert internationalized domain names (IDN) to Punycode (xn-- format) and back.

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How to use IDN Punycode Converter

  1. Enter a domain name.
  2. Select the conversion direction.
  3. Click Convert.

What is IDN Punycode Converter?

Internationalized Domain Names allow domain names to contain non-ASCII characters. Punycode converts these to ASCII-compatible format.

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FAQ

What is Punycode?
Punycode is an encoding scheme that converts Unicode characters into the ASCII-compatible format used by DNS.
Why do IDNs need Punycode?
The DNS system was designed for ASCII characters only.
What does xn-- mean?
The xn-- prefix signals a Punycode-encoded domain label.

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Author

NK
Prof. Noah Klein"The Privacy Guardian"

Cybersecurity Researcher & Privacy Advocate

Professor Klein holds a PhD in Information Security and has testified before EU parliamentary committees on data privacy legislation. He builds encryption tools for journalists, audits web applications for security flaws, and believes that privacy is not a feature but a fundamental right. His research has been cited in Wired, Nature, and The Guardian, and he advises nonprofits on responsible data stewardship.

📖 IDN Punycode Converter on Wikipedia·Encoding on Wikipedia·IDN Punycode Converter on Britannica

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