UUID Generator
Generate UUID v4 for free, one at a time or in bulk. Choose how many you need, with uppercase or without hyphens, and copy each one or all at once. Everything runs in your browser, with secure random generation and nothing sent to servers.
How to use
- 1Choose how many UUIDs to generate.
- 2Adjust the format: uppercase or without hyphens, if you need it.
- 3Copy one UUID or all of them at once.
What it's for
- Create unique identifiers for database records.
- Generate keys for tests or sample data.
- Assign an ID to a resource in an API.
- Produce several identifiers in one go.
Frequently asked questions
Is the tool free?
Yes. It's completely free with no usage limits.
Which UUID type does it generate?
UUID version 4, generated randomly with the browser's secure generator (crypto.randomUUID).
Are the UUIDs really unique?
In practice, yes. A v4 UUID has 122 random bits, so the chance of a collision is negligible.
Is my data sent to a server?
No. The UUIDs are generated in your browser. Nothing is sent or stored.
Do I need an account?
No. The tool works right away, with no signup or login.