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UUID Generator

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Choose a version and count, then click Generate.

Generated UUIDs
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Free Online UUID Generator

Generate UUID v4 (random) and UUID v7 (time-ordered) identifiers instantly in your browser. Create one GUID or hundreds at once, with optional uppercase formatting and hyphen control.

Useful for database keys, API resources, test fixtures, and distributed systems. Generation is cryptographic and private — nothing is uploaded.

How to use

  1. Choose UUID v4, UUID v7, or Nil UUID.
  2. Set how many identifiers to create (1–500).
  3. Optionally toggle hyphens and uppercase output.
  4. Click Generate, then copy or download the result.

Supported versions

  • UUID v4 — random, RFC 4122 compliant
  • UUID v7 — Unix timestamp ordered for sortable IDs
  • Nil UUID — all-zero special value

Common use cases

  • Create primary keys for databases and APIs
  • Generate test fixtures and sample resource IDs
  • Produce bulk UUIDs for imports and scripts
  • Prefer UUID v7 when insertion order matters

Frequently asked questions

Is UUID v4 secure enough for IDs?

UUID v4 uses cryptographically strong randomness in modern browsers, which is suitable for most unique identifier needs. It is not a secret authentication token by itself.

When should I use UUID v7?

Use UUID v7 when you want IDs that roughly sort by creation time, which can help database indexing and debugging.

Can I validate a UUID?

Yes. Use the UUID Validator.