Security Tool
Online UUID Generator
Generate RFC 4122 compliant UUID v4 identifiers instantly. Runs fully in your browser — nothing is stored.
verified_user
Private
bolt
Fast
block
No tracking
UUIDs are generated locally using secure browser cryptography.
How to Generate UUIDs
1
Choose Output Options
Select the number of UUIDs and whether to include hyphens.
2
Generate UUIDs
Generate RFC 4122 compliant UUID v4 identifiers instantly.
3
Copy & Integrate
Copy the UUIDs for use in databases, APIs, or distributed systems.
Frequently Asked Questions
What is a UUID?
A UUID is a 128-bit universally unique identifier commonly used in databases, APIs, and distributed systems.
Which UUID version does this tool generate?
This tool generates UUID version 4, which is random-based and compliant with RFC 4122.
How are UUIDs generated?
UUIDs are generated using your browser’s secure cryptographic random generator.
Are generated UUIDs guaranteed to be unique?
While absolute guarantees are impossible, UUID v4 collisions are extremely unlikely in practice.
Is any data sent to a server?
No. UUID generation happens entirely in your browser.
Can I generate multiple UUIDs at once?
Yes. You can generate multiple UUIDs in a single click.