UUID Generator
UUIDs are 128-bit identifiers commonly used where applications need identifiers with a very low probability of collision without coordinating a central counter.
Quick answer
Generate random UUID version 4 identifiers locally in your browser. The core operation is designed for quick browser-based use without an account.
How to use this tool
- Generate a uuid
- Copy it
- And use it where a random identifier is appropriate. confirm your application’s required uuid version and storage format.
Common errors and things to check
A UUID is an identifier, not automatically a security token. Do not use a random UUID as a substitute for an authentication secret when a secret is required.
Common use cases
- Database identifiers
- Test data
- Distributed application IDs
Privacy and local processing
Core processing for this tool is designed to happen in your browser. The page does not intentionally upload ordinary tool input to a DataToolBase server. Do not paste passwords, private keys, access tokens, personal data, or other sensitive secrets unless you have verified the security requirements for your use case.
Frequently asked questions
Which UUID version is generated?
This tool generates random UUID v4 values.
Are UUIDs guaranteed unique?
No identifier is mathematically guaranteed unique, but properly generated UUID v4 values have a very large random space.