UUID Generator
Generate UUID v4 (random) identifiers. Bulk generate, copy, and customize format.
Bulk Generate
Validate UUID
What is a UUID?
A UUID (Universally Unique Identifier), also known as GUID (Globally Unique Identifier), is a 128-bit identifier standardized in RFC 4122. UUIDs are designed to be unique across space and time without requiring a central authority. The most common version, UUID v4, generates identifiers using cryptographically secure random numbers. UUIDs are widely used as database primary keys, distributed system identifiers, session tokens, file names, and correlation IDs for tracing requests across microservices.
How to Use This UUID Generator
Click "Generate" to create a new UUID v4. The result is displayed instantly and can be copied with one click.
Use bulk generation to create multiple UUIDs at once — perfect for populating test databases or seeding data.
Choose between standard format (with dashes) or compact format (no dashes) depending on your use case.