QuickConvertFREE ONLINE TOOLS ← All tools
Enter a number from 1 to 100.
UUID v4 · RFC 4122 Generated locally with secure randomness — nothing is uploaded.

UUID Generator — Free Online Tool

Create cryptographically random UUID v4 identifiers in one tap. Ideal for database keys, API tokens, session IDs and test data.

Your UUIDs will appear here after you click Generate UUIDs.
Instant results — no waiting
No sign-up needed
Free forever

How it works

1Choose a count — anywhere from 1 to 100 UUIDs at a time.
2Press Generate UUIDs — each one is created with secure random bytes.
3Copy one or all with a tap and paste them wherever you need.

Frequently asked questions

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit label like 6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b, commonly used as database primary keys, request IDs and tokens. This tool generates version 4 (v4) UUIDs, which are fully random.

Are these UUIDs truly random?

Yes. UUIDs are built from your browser's cryptographically secure random number generator (crypto.getRandomValues, or crypto.randomUUID when available), with the version and variant bits set per RFC 4122. They never leave your device.

What does the Uppercase option do?

UUIDs are lowercase by convention, but some systems expect uppercase. Turning on the toggle outputs every generated UUID in capital letters, e.g. 6EC0BD7F-11C0-43DA-975E-2A8AD9EBAE0B. It applies to newly generated UUIDs.

UUID v4 · RFC 4122 · 100% local — nothing you generate leaves this page.