UUID v4 (Universally Unique Identifier) Generator
Generate cryptographically random UUID v4 identifiers in bulk for database keys and distributed systems.
How to Use UUID Generator
- Select the number of UUIDs you want to generate (1 to 50).
- Choose whether you prefer uppercase formatting or need hyphens stripped.
- Click 'Generate UUIDs' to create fresh unique identifiers.
- Click 'Copy All UUIDs' to copy the list to your clipboard.
Technical Specifications & How It Works
Universally Unique Identifiers (UUIDs) provide 128-bit identifiers with negligible collision probability across distributed systems.
This generator uses crypto.randomUUID() to produce RFC 4122 Version 4 UUIDs based on hardware-backed cryptographic random numbers.
Generation executes entirely on your device with zero API requests, guaranteeing zero external tracking of generated IDs.
Frequently Asked Questions
What is a Version 4 UUID?
A Version 4 UUID is randomly generated and contains 122 random bits, with version bits set to '4' and variant bits set to RFC 4122 standards.
Can two generated UUIDs ever collide?
The probability of a duplicate UUID v4 is so minuscule (1 in 2^122) that it is practically impossible in real-world systems.
Can I generate UUIDs without hyphens?
Yes, check the 'Remove Hyphens' option to produce 32-character compact hexadecimal strings.