UUID Generator
Generate RFC 4122 compliant UUIDs (v4) in bulk. Everything runs locally in your browser.
UUID Version
Generated using random (or pseudo-random) numbers. Most commonly used.
Generated UUID
0fb9fc60-6045-4f35-a3fa-a43a79700a1cUUID Anatomy
Random
32 random bits
Random
16 random bits
Version + random
Version 4 + 12 random bits
Variant + random
RFC variant + 14 random bits
Random
48 random bits
Bulk Generate
About UUIDs
What is a UUID?
A Universally Unique Identifier (UUID) is a 128-bit value used to uniquely identify objects or entities on the internet. UUIDs are standardized by RFC 4122 and represented as 32 hexadecimal digits in the format xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx where M is the version and N is the variant.
Version 1
Generated using the current timestamp and the MAC address (or random node).
Version 3
Generated by hashing a namespace UUID and a name using MD5.
Version 4
Generated using random (or pseudo-random) numbers. Most commonly used.
Version 5
Generated by hashing a namespace UUID and a name using SHA-1.
All UUIDs are generated locally in your browser using the uuid library. Nothing is sent to any server.