IDN / Punycode Converter
Convert international domain names between Unicode and Punycode. Compare readable names with their xn-- form.
Why do some domains begin with xn--?
The xn-- prefix identifies a Punycode-encoded internationalized domain label. It represents Unicode characters using ASCII letters, digits, and hyphens.
Your result
A little clarity, right here.
Start with your own content or load the example. Your result will appear here.
Three simple steps
How to use IDN / Punycode Converter
Paste your content or choose a supported file.
Adjust the options, then run the tool.
Review the result and copy or download it.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
This converts labels without checking availability, registration, DNS, or browser-specific IDNA acceptance rules. Enter a hostname, not a full URL.
Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.