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UUID Validator

Validate UUID/GUID format and detect the version (v1, v4, v5, etc.).

Not all strings that look like UUIDs are valid. This validator checks whether a UUID conforms to the RFC 4122 standard format, detects the version (1 through 5), and identifies the variant. Useful for debugging, data validation, and API testing.

Everything runs in your browser with no data sent to any server.

Validator

Results

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How to Use

  1. Paste or type a UUID into the input field
  2. Click Calculate to validate
  3. See whether it is valid, which version, and the variant

FAQ

What UUID versions are detected?

Versions 1 (time-based), 2 (DCE security), 3 (MD5 hash), 4 (random), and 5 (SHA-1 hash).

Does it accept UUIDs without hyphens?

Yes. The validator accepts both the standard hyphenated format and the compact 32-character hex format.

Is my data safe when I use UUID Validator?

Yes. All calculations run entirely in your browser. Your data is never sent to a server, stored in a database, or shared with anyone. You can use this tool with complete confidence that your information remains private.

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