UUID Generator
Generate random UUID v4 identifiers — cryptographically secure.
What Is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique. UUID v4 uses random numbers to generate identifiers in the format xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. They're widely used in databases, APIs, distributed systems, and session management.
How to Generate UUIDs
Click "Generate UUID" to create one or more random v4 UUIDs. Set the count to generate multiple at once (up to 100). Options include uppercase formatting and surrounding braces. All UUIDs are generated using the browser's cryptographic random number generator.
Is This Generator Free?
Yes, 100% free and private. UUIDs are generated locally using crypto.randomUUID() or a secure fallback. Nothing is stored or transmitted.