UUID Generator
Generate UUIDs (v4) for unique identifiers.
Free online tool. No signup required. All processing runs in your browser.
About this tool
Generate one or more UUIDs (v4) for use as unique IDs. No signup; each value is random and suitable for primary keys or request IDs.
What is UUID Generator?
A UUID (Universally Unique Identifier) is a 128-bit value often represented as 36 characters with hyphens. Version 4 UUIDs are random and widely used for IDs in databases and APIs.
How to use UUID Generator
- Click Generate to create a new UUID.
- Copy the value to your clipboard.
- Generate more if you need multiple IDs.
Examples
Example input
(click Generate)
Example output
550e8400-e29b-41d4-a716-446655440000
FAQ
Are these UUIDs cryptographically random?
They use the browser's random source, which is suitable for most app and DB use cases.
Can two generated UUIDs be the same?
The chance of collision is astronomically low for v4 UUIDs.