Unicode Domain to Punycode Converter

Convert internationalized domain names (IDN) containing Unicode characters into ASCII Punycode (xn--).

How It Works & Processing Standards

Convert internationalized domain names (IDN) containing Unicode characters into ASCII Punycode (xn--).

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

Unicode Domain to Punycode Converter is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Unicode Domain to Punycode Converter

  1. 1
    Enter DomainType an internationalized domain (e.g. example.com or domain.xn--...).
  2. 2
    Copy PunycodeCopy the generated ASCII domain (e.g. xn--3e0b707e.kr).

Common Use Cases

  • Configuring DNS server zone files, SSL/TLS certificate requests for IDNs, and web server configuration
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