UUID Generator

Generate random UUIDs (v4) instantly. Bulk generate and copy.

Generated UUID (v4)

405fe5bc-4e86-4799-9908-55a9bf2ae167

Bulk Generate

Count:

About UUID Generator

Free UUID v4 generator that creates universally unique identifiers using cryptographically secure random numbers. Generate single or bulk UUIDs instantly, copy individual IDs or all at once, and toggle between uppercase and lowercase formats. Essential for developers building databases, designing APIs, creating unique resource identifiers, and testing systems that require globally unique IDs.

Frequently Asked Questions

What is a UUID and when should I use one?▾

A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique across all systems. Use UUIDs as primary keys in databases, unique resource identifiers in APIs, session tokens, and anywhere you need a globally unique ID without a central authority.

Are the generated UUIDs truly random?▾

Yes. The tool uses your browser's crypto.getRandomValues() function, which provides cryptographically secure random numbers. UUID v4 contains 122 random bits, making collisions virtually impossible.