Generate random UUID v4 identifiers instantly. Options for bulk generation, uppercase, and no dashes.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. UUID v4 is generated using random numbers, making collisions extremely improbable.
Are these UUIDs truly unique?
UUID v4 uses random numbers. The probability of generating a duplicate is extremely low (approximately 1 in 2^128, or 3.4×10^38). For practical purposes, they are considered unique.
What are UUIDs used for?
UUIDs are commonly used as database keys, session identifiers, transaction IDs, and anywhere a unique identifier is needed without central coordination.
What does "no dashes" mean?
Standard UUID format includes hyphens (e.g., 550e8400-e29b-41d4-a716-446655440000). The "no dashes" option removes these hyphens (e.g., 550e8400e29b41d4a716446655440000).