UUID Generator
DeveloperInstantly generate one or many RFC 4122 compliant UUIDs. Copy individually or all at once.
Frequently asked questions
How do I generate multiple UUIDs at once?
Set the quantity field to the number of UUIDs you need and click generate. Each one is a random RFC 4122 compliant UUID v4, and you can copy them individually or copy the entire list in one click.
What is the difference between a UUID and a GUID?
They are effectively the same thing: a 128-bit identifier formatted as 32 hex digits in five groups. GUID is Microsoft's name for the format, while UUID is the general RFC 4122 term used across most other platforms.
Are generated UUIDs guaranteed to be unique?
UUID v4 values are generated from 122 random bits, making collisions astronomically unlikely but not mathematically impossible. For practical purposes, such as database keys or idempotency tokens, they are treated as unique.
Can I use these UUIDs as database primary keys?
Yes, UUID v4 values are commonly used as primary keys because they can be generated independently on multiple systems without coordination, unlike auto-incrementing integers which need a single source of truth.