UUID Generator
Generate one or many random version-4 UUIDs instantly — computed entirely in your browser using a cryptographically secure random source.
Frequently Asked Questions
What is a UUID?
A Universally Unique Identifier is a 128-bit value used to identify information without a central coordinating authority. Version 4 UUIDs are generated from random or pseudo-random numbers.
How unlikely is a UUID collision?
For version 4 UUIDs, you'd need to generate roughly a billion UUIDs per second for about 85 years to have a 50% chance of a single collision — for practical purposes, they're unique.
Are these UUIDs generated securely?
Yes — they're generated using crypto.randomUUID(), which relies on your browser's cryptographically secure random number generator.
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