UUID Validator
Check whether a string is a well-formed UUID and find out which version it is. A UUID has a fixed 8-4-4-4-12 hexadecimal shape, and the version digit at a set position tells you how it was generated: version 4 is random, version 7 is time-ordered, version 1 is timestamp plus MAC, and so on. This validator confirms the overall format, reads the version and variant bits, and reports them clearly, so you can verify that an identifier coming from an API or a database is actually a valid UUID and not a lookalike. Paste one UUID per line to check several at once. Validation is done with a strict pattern locally in your browser, so the values you check are never sent to a server or logged anywhere.
How to use UUID Validator
- Paste a string to validate.
- See whether it is a valid UUID.
- Read the detected version and variant.
Frequently asked questions
What does the validator check?
It checks whether a string matches the canonical UUID format and, if so, reports which version and variant it uses.
Which UUID versions can it detect?
It identifies versions 1 through 8 by reading the version bits, so you can tell a random v4 from a time-ordered v7 and others.
What is the variant field?
The variant bits indicate the UUID layout family; most standard UUIDs use the RFC variant, which the tool reports alongside the version.
What is UUID Validator?
Check whether a string is a well-formed UUID and find out which version it is. A UUID has a fixed 8-4-4-4-12 hexadecimal shape, and the version digit at a set position tells you how it was generated: version 4 is random, version 7 is time-ordered, version 1 is timestamp plus MAC, and so on.
Is UUID Validator free to use?
Yes. UUID Validator is completely free, with no sign-up and no usage limits.
Does UUID Validator work in a web browser?
Yes. UUID Validator runs in any modern web browser. There is nothing to download or install.
Is my data private with UUID Validator?
Yes. UUID Validator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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