UUID Generator
Generate random UUID v4 identifiers in bulk.
Processed locally in your browser. Nothing you enter is uploaded or stored.
Overview
Generates cryptographically random version-4 UUIDs — 128-bit identifiers virtually guaranteed to be unique, commonly used as database primary keys, request IDs and object identifiers.
How to use it
- 1Choose how many UUIDs to generate (1–100).
- 2Optionally toggle uppercase and hyphens.
- 3Copy all, or copy one at a time.
How it works
Uses the browser's crypto.randomUUID() where available (falling back to crypto.getRandomValues) to generate RFC 4122 version-4 UUIDs, which set 6 fixed bits and randomize the rest.