Punycode Converter (IDN Domains)
Convert international domain names like café.com to xn-- form and back.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: Domain names can only use basic letters, so “café” is stored as “xn--caf-dma”. Scammers sometimes use look-alike letters; decoding helps you spot them.
How to use it (step by step)
- 1Type or paste your text into the “Domains” box. There is already an example in it so you can see how it works; press Clear to start with your own.
- 2The answer appears right away in the “Converted” box. No button needed.
- 3Press Copy and paste the result wherever you need it.
Words to know
- Unit conversion
- Changing a value from one measurement to another, like kilometers to miles. The amount stays the same; only the unit changes.
- Punycode / IDN
- How domain names with special letters (like café) are stored using basic letters (xn--caf-dma).
- Unicode / fancy text
- The worldwide list of every letter, symbol and emoji. “Fancy fonts” are actually special Unicode letters that look bold or cursive.
- Unicode / UTF-8
- Unicode gives every character (A, ñ, ₱, 😀) a number. UTF-8 is how those numbers are stored as bytes.
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