CodeUtils
Loading…
RelatedUUID Bulk GenerateUUID No DashesHash Generator

Generate one or more version 4 UUIDs instantly using the browser's cryptographically secure random number generator. No server calls, no repeats.

Use Cases

  • ›Creating primary keys for database records during local development
  • ›Generating idempotency keys for API requests
  • ›Seeding test fixtures with predictable-format but random identifiers
  • ›Producing request-tracing or correlation IDs in bulk

Example

Input
Generate 4 UUIDs
Output
550e8400-e29b-41d4-a716-446655440000
6ba7b810-9dad-11d1-80b4-00c04fd430c8
6ba7b811-9dad-11d1-80b4-00c04fd430c8
a8098c1a-f86e-11da-bd1a-00112444be1e

FAQ

Are the UUIDs truly random?

Yes. They use crypto.randomUUID() which is seeded by the OS entropy pool — the same source used for cryptographic keys.

Can I generate them without dashes?

Yes. Use the UUID Without Dashes variant or check the No dashes option in the toolbar.