UUID generator.
Generates the required number of random UUID v4 identifiers.
Input
The example value has been entered. Check it immediately or change the value.
Input is processed in the browser. Refreshing returns a sample value.
Result
Check or change the value using the example value result.
Browser uses Web Crypto random numbers. Generation results are not saved, and the fairness of the draw is not publicly verified.
Share result
Share the tool link and result text together. No URL is included in the result. Check the below content and then share it.
Calculation·conversion criteria
Generating a UUID v4 identifier in the browser.
Input example
Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
UUID v4 is a 16-digit string in the 8-4-4-4-12 format with a hyphen. Multiple UUIDs can be created and copied one per line.
How to use
- Use the provided example value or replace the count field.
- Click Verify result and check the following result.
- Result can be copied if needed.
Frequently Asked Questions
Is there no duplication in UUIDs? Can it be used as a password?
It is a identifier with very low collision risk, but absolute uniqueness is not guaranteed. Keep unique constraints in the database separate. The design treating the UUID authentication password as separate requires further review
Calculation criteria and reference materials
- RFC 9562 — UUID
UUID format and version 4 identifier.
- W3C — Web Cryptography
Browser random number API. Not a data source for verifying the fairness of individual draw results.
Verification of calculation criteria: · Calculation·verification principles · Report errors