UUID Generator Online
Generate up to 100 random version-4 UUIDs at once with your browser's cryptographic random generator. Uppercase and no-hyphen formats included.
Frequently asked questions
What is a UUID v4?
A universally unique identifier made of 122 random bits — e.g. 3f6b2a1e-9c4d-4e5f-8a7b-1c2d3e4f5a6b. Collisions are practically impossible.
Are these UUIDs random enough for production?
Yes. They come from crypto.randomUUID() — the browser's cryptographically secure random source.
Can I get UUIDs without hyphens or in uppercase?
Yes — toggle the options above the list and the batch regenerates instantly.