Privacy Policy
Last updated: March 2026
This Privacy Policy describes how CalcFree ("we", "us", or "our") handles information when you use our website at calcfree.org. We are committed to protecting your privacy and being transparent about our practices.
Information We Do Not Collect
CalcFree does not collect, store, or process any personal data that you enter into our calculators. We do not require account creation, email addresses, names, or any other personally identifiable information to use our tools. There are no server-side databases storing your calculation inputs or results.
Client-Side Processing
All calculations on CalcFree are performed entirely within your web browser using JavaScript. Your data never leaves your device. When you enter numbers into our calculators, the computation happens locally on your computer or phone. No calculation data is sent to our servers or any third-party service.
Cookies and Local Storage
CalcFree uses minimal browser storage:
- Theme preference (dark/light mode): stored in localStorage to remember your display preference across visits.
- Google AdSense cookies: our advertising partner Google may set cookies to serve relevant ads and measure ad performance. These cookies are managed by Google, not by CalcFree.
Google AdSense and Advertising
CalcFree displays advertisements through Google AdSense to support the free availability of our tools. Google AdSense may use cookies and web beacons to serve ads based on your prior visits to our website or other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to CalcFree and/or other sites on the Internet.
You can opt out of personalized advertising by visiting Google Ads Settings.
Third-Party Services
Besides Google AdSense for advertising, CalcFree uses Cloudflare for content delivery and DDoS protection. Cloudflare may collect standard web analytics data (IP addresses, browser types, page views) as part of its CDN services. We do not use any other analytics or tracking services.
Children's Privacy
CalcFree does not knowingly collect any personal information from children under 13. Our calculators can be freely used by anyone without providing personal information.
Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated revision date. We encourage you to review this page periodically.
Contact Us
If you have any questions about this Privacy Policy, please contact us at: