About UUID Generator
Generate universally unique identifiers (UUIDs) for databases, APIs, and distributed systems. UUIDs are 128-bit numbers that are practically guaranteed to be unique without any central coordination.
This tool generates cryptographically random UUIDs using your browser's built-in random number generator. You can create single IDs or bulk generate hundreds at once. Choose from different versions depending on your use case.
How to use UUID Generator
Select the UUID version (v4 for random, v7 for sortable).
Choose how many UUIDs you need.
Click Generate to create new UUIDs.
Click on any UUID to copy it, or use Copy All for bulk.
Toggle hyphens or case based on your system's requirements.
Examples
UUID v4 (random)
The most common type. Completely random, no pattern or sequence:
550e8400-e29b-41d4-a716-446655440000 6ba7b810-9dad-11d1-80b4-00c04fd430c8 f47ac10b-58cc-4372-a567-0e02b2c3d479
UUID v7 (time-sorted)
Starts with a timestamp, so IDs sort chronologically. Great for database indexes:
018d5f2c-8a3b-7000-8000-000000000001 018d5f2c-8a3c-7000-8000-000000000002 018d5f2c-8a3d-7000-8000-000000000003 ↑ Notice how they sort in order
Without hyphens
Some systems prefer UUIDs without dashes. Same 32 hex characters, just continuous:
550e8400e29b41d4a716446655440000 6ba7b8109dad11d180b400c04fd430c8 f47ac10b58cc4372a5670e02b2c3d479
Features
When to use this
- •Primary keys in databases (especially distributed databases)
- •Session IDs and authentication tokens
- •Unique file names for uploads
- •Correlation IDs for request tracing across microservices
- •Idempotency keys for API requests
- •Test data generation