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Domain Unicode / Punycode Converter

Instantly convert between Unicode (internationalized) and Punycode (ASCII) domain names, right in your browser.

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Enter a domain below to instantly convert between its Unicode and Punycode (ASCII, "xn--") forms - entirely in your browser.

JustChecker builds tools that respect your data - this one never leaves your browser.

Frequently Asked Questions

Punycode is an encoding that represents Unicode characters (like accented letters or non-Latin scripts) using only ASCII characters, so domain names with international characters can work within the DNS system, which only supports ASCII. Punycode domains are prefixed with "xn--".

Any domain containing non-ASCII characters - like café.com or münchen.de - is actually stored and looked up in DNS using its Punycode form (xn--caf-dma.com, xn--mnchen-3ya.de).

No - this tool runs entirely in your browser using the standard URL API. Nothing you enter is transmitted anywhere.
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