Last updated: January 2026
PreventCalculator.com does not store, save, or transmit any health data you enter into our calculators. All calculations are performed locally in your browser. No health information is collected, stored, or shared with third parties.
We may use cookies and analytics tools (such as Google Analytics) to understand how visitors use our website. This includes pages visited, time on site, and general location (country/region level). No personally identifiable information is collected through analytics.
This website may display advertisements through Google AdSense or similar networks. These services may use cookies to show relevant ads based on your browsing behavior. You can opt out of personalized advertising through Google's Ad Settings.
✓ Your health data stays on your device. Values entered into calculators (age, blood pressure, cholesterol, etc.) are processed entirely in your browser and are never sent to our servers.
For privacy questions, contact us via our contact page.