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UUID Generator
Generate a random UUID (v4) instantly
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About this tool
Generate a random, unique UUID — useful for database IDs, API keys, or anywhere you need a guaranteed-unique identifier.
Frequently asked questions
How unlikely is a UUID collision?
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.
What's a UUID typically used for?
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.
Do I need to keep generating new ones for each use?
Yes — each click generates a fresh, independent UUID; reusing one defeats the purpose of using UUIDs for uniqueness in the first place.