Punycode Converter
Convert internationalized domain names (IDN) to Punycode and back online. Encode Unicode domains to xn-- ASCII or decode them, right in your browser.
Input
One domain per line, "xn--" strings supportedResult
Punycode (RFC 3492) maps Unicode characters to a limited ASCII set, which is how internationalized domain names such as 中文.com are represented as xn--fiq228c.com on the Internet. All conversions run locally in your browser — nothing is uploaded. Encoding accepts uppercase input and always outputs lowercase xn-- labels; decoding is case-insensitive.