🆔 UUID Generator

Generate random UUID v4 identifiers. Perfect for database keys, session IDs, and unique identifiers in your applications.

How many UUIDs? Format:

Standard (with hyphens) Uppercase No hyphens

Generated UUIDs:

About UUID v4

UUID (Universally Unique Identifier) version 4 uses random numbers to generate a 128-bit identifier. The format is: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where x is any hexadecimal digit and y is one of 8, 9, A, or B.

Collision probability: With 122 random bits, the chance of generating two identical UUIDs is astronomically small —about 1 in 2.71 × 10¹⁸for 1 billion UUIDs.
Uses: Database primary keys, distributed systems, session tokens, file identifiers, and anywhere a unique ID is needed without a central authority.
Privacy: All UUIDs are generated using crypto.getRandomValues() —a cryptographically secure random number generator built into your browser.