UUID Generator
Generate random version 4 UUIDs (GUIDs) one at a time or in bulk. Cryptographically random, instant, and free. Copy with one click.
UUID / GUID generator
Generate random version 4 UUIDs (also called GUIDs) for use as database keys, request identifiers, or unique file names. Choose how many you need and copy them instantly. All values are generated locally in your browser.
Frequently asked questions
What is a version 4 UUID?
A v4 UUID is a 128-bit identifier whose bits are almost entirely random, written as 36 characters like 3f2504e0-4f89-41d3-9a0c-0305e82c3301. The chance of a collision is negligibly small.
Are these UUIDs cryptographically random?
Yes. They use crypto.randomUUID (or crypto.getRandomValues as a fallback), so they're suitable as unique keys and identifiers.
Can I generate many at once?
Yes — set the count to generate up to 100 UUIDs at a time and copy them all with one click.