Online UUID Generator
Bulk Version 4 UUID Generation
What is a version 4 UUID?
A Version 4 UUID (Universally Unique Identifier) is a randomly generated 128-bit identifier, standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE). Here are its key characteristics:
- Randomness: It is generated using random or pseudo-random numbers.
- Structure: A UUID is 36 characters long, formatted as 32 hexadecimal digits separated by hyphens:
8-4-4-4-12(e.g.,f47ac10b-58cc-4372-a567-0e02b2c3d479). - Version and Variant: The 13th character is always
4, indicating it’s a Version 4 UUID, and the 17th character is one of8,9,a, orb, indicating the variant. - Uniqueness: While not guaranteed, the probability of duplication is extremely low due to the large number of possible combinations (2^122).
FAQ of Online UUID Generator
Yes! Simply specify the number of UUIDs you need (e.g., 1, 5, 10, or more) max=500, and our tool will generate them in bulk for you. You can also generate as a file.
While UUIDs are not guaranteed to be unique, the probability of duplication is extremely low (approximately 1 in 2^122 for Version 4 UUIDs). For most practical purposes, they can be considered unique.
Database records (e.g., primary keys).
Session IDs in web applications.
Tracking entities in distributed systems.
Unique identifiers for files, transactions, or devices.
No, MyFreeTools.info is entirely web-based. You can access it through any browser on your computer, tablet, or smartphone.