Random UUIDs, generated locally
UUIDs (universally unique identifiers) label database rows, API resources, and distributed events without any central coordination. Enter how many you need, hit Generate, and copy them individually or as a batch — all created on your device with cryptographic randomness.
Frequently asked questions
What version of UUID does this generate?
Version 4 (random), via your browser's crypto.randomUUID() — 122 random bits from a cryptographic source, the standard choice for IDs.
Can two generated UUIDs collide?
In theory yes, in practice no — you'd need to generate about 2.7 quintillion UUIDs for even a 50% chance of one collision. Treat them as unique.
How many can I generate at once?
Up to 500 per batch, copyable as a newline-separated list — handy for seeding databases or test fixtures.