About UUID V4
Generate Version 4 random UUIDs. Most popular version for general-purpose unique identifiers and security tokens.
Version 4 UUIDs are randomly generated using cryptographically secure methods. Ideal for general purpose and security-sensitive applications.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. It is also known as a GUID (Globally Unique Identifier) in Microsoft systems.
When should I use UUID V4?
Version 4 UUIDs are randomly generated using cryptographically secure methods. Ideal for general purpose and security-sensitive applications.
Are generated UUIDs truly unique?
Yes, practically unique. The probability of collision is astronomically low, especially for Version 4 and 7 UUIDs, making them effectively unique for all practical purposes.
Is this tool free to use?
Yes, this UUID generator is 100% free and processes everything locally in your browser for maximum security and speed.