UUID Generator
Generate universally unique identifiers (UUIDs)
Generate UUIDs
1
Validate UUID
About UUIDs
UUID v4 (random) is generated using cryptographically secure random numbers.
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
The 4 indicates version 4, and y is one of 8, 9, a, or b.
Features
- Generate UUID v4 (random)
- Bulk generation (up to 100 at once)
- Uppercase/lowercase format
- Copy single or all UUIDs
- Validate existing UUIDs
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is guaranteed to be unique across space and time. They are commonly used in databases and distributed systems.
What is the difference between UUID versions?
UUID v4 is randomly generated and most commonly used. UUID v1 is based on timestamp and MAC address. We primarily support v4 for its simplicity and privacy.