UUID Generator
Generate one or many random version-4 UUIDs for use as unique identifiers in code, databases, or testing.
Free to use, no sign-up, no limit on how many times you run it.More developer tools
Overview
UUIDs (universally unique identifiers) are commonly used as database keys, request IDs, or object identifiers where you need a value that won't collide with any other.
- Generate 1 to 50 UUIDs at once
- One-click copy for a single ID or all of them at once
- Uses the browser's secure random generator
How to use it
- 1Choose how many UUIDs you need
- 2Click Generate new for a fresh batch at any time
- 3Copy one or all of the results
Frequently asked questions
How unlikely is a UUID collision?
Version-4 UUIDs have 122 random bits, making accidental collisions astronomically unlikely even across billions of generated values.
Are these UUIDs generated securely?
Yes — they're generated using your browser's built-in cryptographically secure random number generator.