How do I generate a UUID online?

Click generate, then copy the UUID v4 value. All processing runs in your browser.

Is this a UUID decoder?

No. This page generates new UUIDs. To inspect JWT or encoded tokens, use the JWT Decoder on CoderTools.io.

Are these UUIDs guaranteed unique?

Collisions are extremely unlikely for UUID v4 and are not a practical concern in normal applications.

UUID Generator

Generate random UUID v4 identifiers and copy with one click.

Output

Processes input in your browser Privacy policy

About this tool

This tool generates random version 4 UUIDs that you can use as unique identifiers in databases, logs, test data, and distributed systems.

How to use this tool

Click Generate UUID.
A new version 4 UUID will appear in the output area.
Click Copy to use it wherever you need a unique identifier.

Examples

Generated example:
550e8400-e29b-41d4-a716-446655440000

FAQ

How do I generate a UUID online?: Paste nothing required - click generate, then copy the UUID v4 value. All processing runs in your browser.
What UUID version is used?: This tool generates random version 4 UUIDs.
Is this a UUID decoder?: No. This page generates new UUIDs. To inspect JWT or encoded tokens, use the JWT Decoder.
Are these UUIDs guaranteed unique?: Collisions are extremely unlikely for UUID v4 and are not a practical concern in normal applications.

Common use cases

Generate unique IDs for database seeds or test data.
Create correlation IDs for logging and tracing.
Produce UUID v4 values for API mocks and fixtures.

Limitations

This tool generates random UUID v4 values only. It does not validate or parse existing UUIDs.

Privacy note

This tool is designed to process input directly in your browser. Do not paste passwords, private keys, or highly sensitive data into any online tool unless you fully understand how it processes data. See our privacy policy.

Last updated: July 2026