UUID Generator
Generate UUIDs/GUIDs instantly with customizable formats. Perfect for developers, database keys, and unique identifiers.
No UUID yet
Configure your UUID settings and click generate to create a unique identifier
Related generators
Explore other random tools while you're here.
Number Generator
Generate truly random numbers for games, lotteries, and statistics. Set custom ranges and get instant results.
Password Generator
Create cryptographically secure passwords instantly. Customize length, symbols, and character types.
Name Generator
Generate realistic random names for characters, stories, games, or test data. Choose gender and language.
UUID generator FAQs
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUIDs are standardized by RFC 4122.
What is UUID v4?
UUID version 4 is randomly generated using cryptographically secure randomness. It has 122 random bits, making collisions virtually impossible.
Are these UUIDs truly unique?
While not mathematically guaranteed, the probability of generating duplicate UUIDs is astronomically low (roughly 1 in 2^122).
Can I generate multiple UUIDs at once?
Yes, you can generate up to 100 UUIDs at once for bulk operations or testing purposes.
What formats are supported?
We support standard (with hyphens), compact (no hyphens), with 'uuid:' prefix, and URN format (urn:uuid:).