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Format Conversion
Encode international domain names (IDN) to ASCII (Punycode)
Execution
Fill in the form, run the tool, and review the result in one place.
Samples
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Tool usage guide
The Punycode Encoder allows you to convert internationalized domain names (IDNs) containing non-ASCII characters into their compatible ASCII-based Punycode format. This ensures your domain names are correctly recognized by DNS systems and web browsers worldwide.
Background
A developer is setting up a website for a client using the domain 'münich.com'.
Problem
The DNS provider requires the ASCII version of the domain to complete the registration.
How to use
Enter 'münich.com' into the domain field and click encode.
Outcome
The tool returns 'xn--mnich-kva.com', which can be safely used in DNS settings.
Background
An admin is configuring a server for a site using the domain '中国.cn'.
Problem
The server configuration file does not support Unicode characters in the domain field.
How to use
Input '中国.cn' into the encoder to generate the compatible string.
Outcome
The tool returns 'xn--fiqs8s.cn', allowing the server to correctly route traffic.
Punycode is a representation of Unicode characters using only the limited ASCII character set, specifically designed for the Domain Name System.
DNS infrastructure only supports ASCII characters. Encoding your domain ensures it is readable by all internet protocols.
Yes, it supports any international character set that is valid within the IDN standard.
Domain names are generally case-insensitive, and the Punycode output will be in lowercase ASCII.
This specific tool is designed for encoding; however, the resulting 'xn--' string can be decoded by standard IDN-compliant browsers.