Developer Tools
UUID Generator
Generate random v4 UUIDs in bulk.
Free foreverRuns in your browserNo sign-up
About the UUID Generator
Generate random version-4 UUIDs (also called GUIDs) in bulk, ideal for database keys, test data and API identifiers.
Create up to 100 at once and copy them all with a single click.
Version-4 UUIDs are built from random data, giving about 122 bits of randomness, which makes accidental collisions practically impossible.
Key features
- Cryptographically random v4 UUIDs
- Generate 1 to 100 at a time
- Copy all results instantly
- Generated locally in your browser
How to use
- 1Choose how many UUIDs you need.
- 2Click Generate, then copy them.
Frequently asked questions
- What is a version-4 UUID?
- A v4 UUID is a 128-bit identifier generated from random data, written as 32 hex digits in five groups, like 550e8400-e29b-41d4-a716-446655440000.
- Are these UUIDs unique?
- For all practical purposes, yes. With around 122 random bits, the chance of generating two identical UUIDs is negligibly small.
- Are they generated securely?
- Yes. They use your browser's cryptographically secure random generator and are never sent anywhere.