UUID Generator

How to use the UUID Generator

1. Press Generate to create a new UUID.
2. Copy the value for use in databases, APIs or tests.
3. Generate again for additional unique IDs.

How it works

Version 4 UUIDs are 128-bit values with random bits in the positions defined by RFC 4122. Collision probability is extremely low for normal application use.

Common for primary keys, request IDs and distributed systems.

Examples

• Each click produces a new value such as 550e8400-e29b-41d4-a716-446655440000 (format example).
• UUIDs from this tool follow the 8-4-4-4-12 hexadecimal layout.
• Regenerating never reuses logic that depends on your personal data—values are random.

UUID Generator FAQ

Is a UUID guaranteed unique?

Version 4 UUIDs are practically unique for typical systems; theoretical collisions are vanishingly rare.

Is this UUID version 1 or 4?

This generator creates random Version 4 UUIDs.

Is the UUID Generator free?

Yes.