🎲 UUID Generator
Generate random UUIDs (v4)
Format: UUID v4 (Random)
Example: 550e8400-e29b-41d4-a716-446655440000
Frequently Asked Questions
What is a UUID and when should I use it?
UUID (Universally Unique IDentifier) is a 128-bit identifier guaranteed to be unique across space and time. Use UUIDs for database primary keys, session IDs, file names, or any scenario requiring unique identifiers without central coordination.
Are the generated UUIDs truly random?
Yes! This tool uses cryptographically secure random number generation (crypto.getRandomValues) to generate UUID v4, ensuring high-quality randomness and virtually eliminating collision risk.
What's the difference between UUID versions?
This tool generates UUID v4 (random). Other versions include: v1 (timestamp-based), v3/v5 (name-based with hashing). V4 is most common for general use as it's completely random and doesn't leak information like timestamps or MAC addresses.
Can I generate multiple UUIDs at once?
Yes! Use the 'Count' field to generate up to 100 UUIDs in one click. You can also customize the format (uppercase/lowercase, with or without dashes) for all generated UUIDs.