UUID Generator
Create one or many random UUID version 4 identifiers instantly. Format the results for your database, test data or development workflow.
UUID options
Generated UUIDs
Generated privately on your device
This tool uses the browser's cryptographic random source to create RFC 4122 UUID version 4 values. Your UUIDs are not uploaded or stored. Random UUIDs are designed to make collisions extremely unlikely, but uniqueness is not mathematically guaranteed.
How to use UUIDs safely
Choose the number of identifiers, keep hyphens unless your target system requires a compact value, and generate a fresh batch. A standard UUID v4 looks like 550e8400-e29b-41d4-a716-446655440000: 32 hexadecimal characters displayed in five groups.
UUIDs are useful for database records, API objects, test fixtures and distributed systems because they can be created without a central counter. They are identifiers, not passwords or secret tokens. Do not rely on a UUID alone to authorize access, and validate format and uniqueness at the database boundary.