Generate UUIDs
About This UUID Generator
This tool creates random version 4 UUIDs using your browser's secure random generator when available. You can toggle uppercase or remove hyphens for different formats.
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Tool FAQ
Is this tool private?
Yes. The calculations run locally in your browser, and no inputs are sent to a server. If you refresh the page, your values are cleared.
How accurate are the results?
Results are based on the standard formulas shown on the page. If you need certified or audited calculations (for medical, legal, or financial decisions), consult a professional source.
How should I use this tool?
Enter your values, click the calculate button, and review the result. Use the notes or reference tables to interpret the output and double-check units.
Can I share or bookmark the result?
You can bookmark the page for repeat use. For sharing results, copy the output text or take a screenshot.