Tool
Create UUID and ID with UUID Generator, then copy, download, or adapt it for your workflow. Start with a small test input when the output will be shared or published.
UUID Generator
Create UUID and ID with UUID Generator, then copy, download, or adapt it for your workflow. Start with a small test input when the output will be shared or published.
Live Tool
UUID Generator
Create UUID and ID with UUID Generator, then copy, download, or adapt it for your workflow. Start with a small test input when the output will be shared or published.
Tool Workspace
UUID Generator
Create UUID and ID with UUID Generator, then copy, download, or adapt it for your workflow. Start with a small test input when the output will be shared or published.
Fallback
UUID Generator
Create UUID and ID with UUID Generator, then copy, download, or adapt it for your workflow. Start with a small test input when the output will be shared or published.
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About UUID Generator
UUID Generator creates version 4 UUIDs for test data, correlation IDs, fixtures, and identifiers that need a standard text representation. A UUID is an identifier, not a password, access token, or authorization mechanism.
Reference: Universally Unique IDentifiers (RFC 9562)
01
How to use it
- Choose the number of UUIDs needed for a test, fixture, or import batch.
- Generate and copy the values in the format expected by the destination system.
- Store identifiers according to the database, API, and privacy rules of the application that will use them.
02
Frequently asked questions
What is a UUID v4?
Version 4 UUIDs use randomly generated bits. They are widely used where systems need identifiers without a central counter.
Can a UUID be used as a secret?
No. Even a hard-to-guess identifier should not be treated as a password, session token, API key, or authorization check.
Can two generated UUIDs collide?
A collision is extremely unlikely with correctly generated v4 UUIDs, but systems that require absolute uniqueness should still enforce a uniqueness constraint.