✦ SOLVORY FREE ONLINE TOOLS · DEVELOPER & DATA
UUID Generator — Free Online Tool
Generate RFC-standard version 4 UUIDs in your browser using cryptographic random bytes. Choose the count, letter case and hyphenated or compact display.
How to use the UUID Generator
Generate RFC-standard version 4 UUIDs in your browser using cryptographic random bytes. Choose the count, letter case and hyphenated or compact display.
- Choose how many identifiers you need, between 1 and 100.
- Select lowercase/uppercase and standard or compact formatting.
- Generate UUIDs, then copy a single identifier or the whole list.
- Use them as identifiers, not as passwords or proof of authorization.
Accuracy note: Secure context required. Not an account security or token issuing service.
UUID Generator formula and method
Version 4 UUIDs contain 128 bits. The version field is set to binary 0100 and the variant bits to the RFC variant 10, with the remaining bits generated randomly.
All numeric results depend on entered measurements, dimensions and settings. Intermediate calculations retain decimal precision; displayed results may be rounded. Verify material specifications, relevant laws and seller fee conditions where applicable.
Worked example
Example format: 550e8400-e29b-41d4-a716-446655440000. This illustrates formatting only; the generator will create new random UUID values each time.
Adjust the values in the interactive tool above to reproduce this example or model your own situation.
Frequently asked questions
Is UUID v4 guaranteed globally unique?
No centralized registry guarantees uniqueness, but random UUID v4 collisions are extremely unlikely when generated securely.
Does the UUID generator upload IDs to a server?
No. It uses the browser crypto.getRandomValues interface when available over a secure connection.
Should I use UUIDs as passwords?
No. UUIDs are identifiers, not a substitute for securely generated authentication secrets.