UUID Generator

Generate cryptographically random v4 UUIDs. Batch up to 1000 at once.

Count

Uppercase No hyphens

About this tool

Uses the native crypto.randomUUID() browser API to generate RFC 4122 v4 UUIDs — 122 bits of randomness, cryptographically secure. Toggles let you output uppercase or strip hyphens for use in path segments or database keys. Batch up to 1000 at a time for seed data or test fixtures.