UUID Generator

Generate UUID v4 identifiers instantly for development, databases, APIs, and distributed systems. UUIDs are universally unique identifiers commonly used in modern software systems.

UUID Example

Example UUID generated using version 4:

550e8400-e29b-41d4-a716-446655440000

What is a UUID

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. UUIDs are designed to be globally unique without requiring a central authority.

Developer Use Cases

Generate unique database record IDs.
Create request identifiers in distributed systems.
Assign unique identifiers to API resources.
Track sessions or transactions.
Generate unique filenames or tokens.

How to Use This Tool

Click Generate UUID to create a new UUID.
Click Generate 10 UUIDs to generate multiple identifiers.
Copy the generated UUID using the Copy button.

Frequently Asked Questions

Are UUIDs truly unique?

UUIDs are statistically unique. The probability of generating the same UUID twice is extremely small.

What is UUID v4?

UUID version 4 is generated using random numbers and is the most commonly used UUID format.

Do databases support UUID?

Yes. Most modern databases such as PostgreSQL, MySQL, and MongoDB support UUID fields.