UUID Generator
Generate cryptographically secure random UUID v4 identifiers. Create one or a thousand at a time, formatted exactly how you need them.
How to use the UUID Generator
Choose how many UUIDs you need (up to 10,000 per batch).
Pick the case and whether to wrap IDs in braces.
Click Generate, then copy or download the list.
Frequently asked questions
What is a UUID v4?
A Universally Unique Identifier version 4 is a 128-bit random ID (e.g. 9b2e…-4f7a…) with 122 bits of randomness — the chance of collision is astronomically small.
Are these UUIDs secure?
Yes — they use your browser’s crypto.getRandomValues, the same cryptographically secure source operating systems use.
Can I generate GUIDs?
GUID and UUID are the same format. The standard lowercase, hyphenated output works everywhere GUIDs are expected.