UUID Generator
Create one or hundreds of random UUIDs (version 4) for database keys, test data and identifiers. Everything runs in your browser. Your files and text are not uploaded to our servers.
Use the tool
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How to use it
- Enter how many UUIDs you want, from 1 to 500.
- Choose uppercase, no hyphens or braces if needed.
- Select Generate UUIDs and copy the list.
Tips for best results
- UUIDs come from your browser's cryptographically secure random generator.
- A UUID is an identifier, not a secret. Do not use it as a password.
Frequently asked questions
Can two UUIDs be the same?
Version 4 UUIDs are random with 122 bits of randomness, so a repeat is extremely unlikely in practice.
What is the format?
Five groups of hexadecimal digits separated by hyphens, such as 123e4567-e89b-42d3-a456-426614174000.