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UUID Generator

Generate random RFC 4122 v4 UUIDs locally.

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How it works

How it works

  • v4 UUIDs set version=4 and RFC 4122 variant; the remaining 122 bits are random from Web Crypto.
  • Collision odds are negligible for small batches; at Internet scale collisions remain extraordinarily rare.
  • Not a secret: do not embed sensitive data; use proper crypto keys/tokens where required.

Privacy & Security

Runs entirely on-device.

Accuracy, Limits & Tips

Not suitable for cryptographic keys; use platform key APIs for that.

Examples

  • Generate IDs for test data.

Looking for broader guides and best practices? Visit the ToolsAreUs Blog for indexes (like the full tool list) and articles (e.g. secure password generation).