UUID Validator
Check if a UUID / GUID is valid and detect its version. Free online UUID validator.
How to use UUID Validator
- 1Paste a UUID.
- 2Click Validate.
- 3See the version and validity.
Frequently asked questions
Which versions can it detect?
v1, v3, v4 and v5 UUIDs are recognized.
Is the UUID Validator really free?
Yes — every tool on ToolFlexPro is 100% free with no signup, no watermarks and no daily limits.
Is my data safe?
Everything runs directly in your browser. Nothing is uploaded to a server, so your data stays private on your device.
Does it work on mobile?
Yes. ToolFlexPro is fully responsive and works on any phone, tablet or desktop.
Do I need to install anything?
No installs. It runs instantly in any modern browser (Chrome, Safari, Firefox, Edge, Brave).