Choose how many UUIDs you need and the format.
Formula
UUID v4: 122 random bits, formatted 8-4-4-4-12
Worked example
Example: 2b7ff76c-fe85-4dcf-8820-6e45d1ed4308.
Frequently asked questions
Can two UUIDs collide?
In practice no; the chance is astronomically small.
Is a GUID the same as a UUID?
Yes, GUID is Microsoft’s name for a UUID.
Are these safe to use as secrets?
Use a password generator for secrets; UUIDs are identifiers.
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Results are estimates for information only. Check important figures with a professional.