UUID Generator
Generate UUIDs (v4) instantly
How to Use UUID Generator
- Select the number of UUIDs to generate (1-100)
- Choose your formatting options (uppercase, hyphens)
- Click "Generate UUID" and copy your unique identifiers
Key Features
- Bulk Generation - Generate up to 100 UUIDs at once for your needs
- Cryptographically Secure - Uses crypto.randomUUID() for truly random identifiers
- Flexible Formatting - Choose uppercase/lowercase and with/without hyphens
Frequently Asked Questions
What is a UUID?
UUID stands for Universally Unique Identifier. It is a 128-bit number used to uniquely identify information in computer systems.
Are these UUIDs truly unique?
Yes! UUID v4 uses cryptographic randomness, making collisions (duplicates) extremely unlikely - about 1 in 5.3 × 10^36.
What is the difference between UUID v4 and other versions?
UUID v4 is completely random. v1 includes timestamp and MAC address, v5 is name-based. v4 is most common for general use.
Can I use these UUIDs in my database?
Absolutely! UUIDs are perfect for database primary keys, especially in distributed systems where you need globally unique identifiers.