Generate a random, unique UUID — useful for database IDs, API keys, or anywhere you need a guaranteed-unique identifier.
Frequently asked questions
Extremely — a v4 UUID has 122 random bits, meaning the odds of ever generating a duplicate are astronomically small even across billions of IDs, which is why they're trusted as unique identifiers in production databases.
Database primary keys, API request/tracing IDs, session tokens, and any situation where you need an identifier that's unique without coordinating with a central counter or authority.
Yes — each click generates a fresh, independent UUID; reusing one defeats the purpose of using UUIDs for uniqueness in the first place.