Frequently Asked Questions
Which UUID version is generated?
This tool generates UUID v4 values, which use 122 bits of cryptographic randomness.
Can I generate multiple UUIDs at once?
Yes. Set the count field and generate a list in one click.
Is UUID generation done locally?
Yes. UUID generation runs entirely in your browser.
Example input/output
Input: Count: 3
Output: 550e8400-e29b-41d4-a716-446655440000
c56a4180-65aa-42ec-a945-5fd21dec0538
c56a4180-65aa-42ec-a945-5fd21dec0539
How it works
This tool uses crypto.randomUUID() (where available) or constructs a UUID v4 using window.crypto.getRandomValues() to generate each value. UUID v4 uses 122 bits of randomness, making collisions extremely unlikely. Processing runs in your browser.
Common use cases
- Generate UUIDs for primary keys in database insert scripts
- Create unique identifiers for distributed system components
- Produce UUIDs for test fixtures or seed data