Generators
UUID Generator
Generate one or many secure UUID v4 values. Everything happens on this device.
Your input stays private
This tool runs entirely in your browser. DevCalc does not send or store the content you enter.
How to use UUID Generator
- Choose a quantity from 1 to 50.
- Generate UUIDs using the browser’s secure random source.
- Copy the values into your project.
Example and important notes
UUID v4 values are useful for identifiers that can be generated independently without a central sequence.
- UUIDs are identifiers, not passwords or access tokens.
- Uniqueness is probabilistic but collision risk is extremely small for normal use.
Frequently asked questions
Are these UUIDs secure?
They use the browser crypto API, but an identifier should still not be treated as a secret.
Are uppercase and lowercase different?
Hexadecimal UUID text is conventionally case-insensitive.