Tools · Dev utilities
Punycode converter
Convert internationalised domain names (IDN) to ASCII Punycode and back.
xn--caf-dma.fr
Punycode (RFC 3492) is what lets internationalised domains travel through DNS. Browsers normalise both forms via the native URL parser — this tool is a thin wrapper around it.
The link encodes your inputs in the URL fragment. Nothing is uploaded.