UUID Generator
Create identifier values for testing, records, examples, and local development.
Popular in this group
Switch tools without re-entering your text.
Loading tool…
About this tool
UUID Generator — UUIDs are designed to have a very low collision probability when generated correctly. They are useful where a central sequential number is unnecessary or undesirable.
A UUID is an identifier, not a secret. Do not rely on its unpredictability as authorization or expose sensitive records without access control.
How to use it
- Choose the number or supported UUID type.
- Generate the identifiers.
- Copy them into your development or test data.
Example
Generate 3 UUIDs
550e8400-e29b-41d4-a716-446655440000 …
Treat the sample as an identifier, not as a credential.
Common uses
- Create test records and fixtures.
- Assign client-side draft identifiers.
- Prepare examples for API documentation.
What to know
- Generated values do not check your database for existing records.
- The exact version and randomness source depend on the implementation.
Privacy: The operation runs locally in your browser; your input is not uploaded by this tool.
Frequently Asked Questions
Are UUIDs guaranteed never to collide?+
No identifier has an absolute mathematical guarantee in all implementations, but properly generated UUIDs have an extremely low collision probability.
Can I use a UUID as a password or access token?+
No. Identifiers are not a substitute for cryptographically designed secrets and authorization checks.
Should database UUIDs be stored as text?+
That depends on the database and schema; native UUID or compact binary types can be preferable.