Free Online UUID v4 Generator
Generate random UUID v4 values
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About UUID Generator
Generate cryptographically random UUID v4 values instantly. Create single or bulk UUIDs for databases, APIs, and testing. Uses the Web Crypto API for true randomness.
How to Use UUID Generator
- 1
Click Generate
A new random UUID v4 is created instantly.
- 2
Generate in bulk
Set the quantity to generate multiple UUIDs at once.
- 3
Copy UUIDs
Click copy to grab one or all generated UUIDs.
Frequently Asked Questions
Is my data safe?
Yes. All processing happens entirely in your browser. Your data never leaves your device and is never uploaded to any server.
Are these UUIDs truly random?
Yes. They are generated using the Web Crypto API (crypto.randomUUID or crypto.getRandomValues), which provides cryptographically secure randomness.