UUID Generator (v4)
Generate a Universally Unique Identifier (UUID) version 4 instantly. UUIDs are used to uniquely identify information in computer systems, databases, and distributed applications. This tool generates secure, random UUIDs that can be copied and reused in your projects.
What is a UUID (Universally Unique Identifier)?
A UUID is a 128-bit number used to uniquely identify information in computer systems. UUIDs are essential for generating unique keys, session identifiers, transaction IDs, and more — without requiring a central authority or database.
This tool generates UUID version 4 (UUID v4), which are randomly generated using cryptographically secure values to avoid collisions.
Why Use This UUID Generator?
- Instantly generate secure, unique UUID v4 values.
- Client-side only – nothing is stored or sent to a server.
- Useful for software development, database keys, tokens, and identifiers.
- Includes copy and regenerate functionality for ease of use.
FAQs
This tool generates UUID v4, which is based on secure random values and is suitable for most modern applications.
While no tool can guarantee 100% uniqueness, UUID v4 provides 122 bits of randomness — making collisions extremely unlikely (roughly 1 in 2122).
Yes. It runs entirely in your browser using the native crypto.randomUUID() API. No data is transmitted or stored.
Absolutely. UUID v4 is widely used in production systems for database keys, API tokens, user IDs, and more.