UUID / GUID Generator
Generate fast, secure, and random UUIDs instantly. Supports v4, v5, v6, and v7 UUIDs.
Best Online UUID & GUID Generator
Need a unique identifier for your database, API, or application? CodeToolTip provides the ultimate online UUID generator and GUID generator. Our tool supports various versions, including UUID v4 (random), v5 (name-based), v6 (time-ordered), and the latest UUID v7 (Unix Epoch time-based). A superior alternative to UUID.org and other online UUID tools.
Versatile UUID Versions
- UUID v4: Entirely random and perfect for most general-purpose use cases.
- UUID v7: The modern standard for database primary keys, combining a timestamp for sorting and random bits for uniqueness.
- Bulk Generation: Generate up to 5,000 UUIDs at once, perfect for seeding databases.
- Secure & Private: 100% in-browser generation. Your IDs are never sent to any server.
What is a UUID / GUID?
A Universally Unique Identifier (UUID) or Globally Unique Identifier (GUID) is a 128-bit number used to identify information in computer systems. They are widely used in SQL and NoSQL databases, distributed systems, and file systems to ensure data integrity without central coordination.
UUID Generator FAQ
Is this UUID generator truly random?
Yes! Our generator uses cryptographically secure random number generators (Web Crypto API) provided by your browser to ensure that every Random UUID generated is unpredictable.
What is the difference between UUID and GUID?
They are the same thing. GUID is Microsoft's terminology, while UUID is the standard term used by the industry (RFC 4122). Both are supported by our online GUID maker.
Quick Tips
- v4 UUIDs are randomly generated and most commonly used.
- v5 UUIDs are deterministic. The same namespace and name will always produce the same UUID.
- v6 UUIDs are time-based and sorted like v1, but optimized for database locality.
- v7 UUIDs feature a Unix Epoch timestamp and are optimal for database primary keys.
- The chance of a collision with a v4 or v7 UUID is virtually zero.