Privacy Policy
Last updated: April 2025
At CalcSphere, your privacy matters. This site is built to provide fast, useful calculators without tracking or selling your data.
What data we collect
We do not collect or store any personal data. All calculations are performed locally in your browser — your inputs stay entirely on your device and are never sent to any server.
Cookies
CalcSphere uses a minimal cookie to remember your dark/light mode preference. We do not use cookies for tracking, analytics, or advertising targeting. Third-party services (such as Google AdSense) may set their own cookies as described below.
Advertising
CalcSphere displays advertisements served by Google AdSense. Google may use cookies and web beacons to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising by visiting Google Ad Settings. CalcSphere does not control which ads Google displays and receives no personal data from Google about individual users.
Analytics
We use Vercel Speed Insights to monitor site performance. This service collects anonymous performance metrics and does not identify individual users or store personally identifiable information.
Third-party links
CalcSphere may contain links to external websites. We are not responsible for the privacy practices of those sites and encourage you to review their privacy policies.
Children's privacy
CalcSphere is a general-purpose tool suitable for all ages. We do not knowingly collect any personal information from children under 13.
Security
This site is served over HTTPS. All calculations run client-side in your browser. No financial or personal data is transmitted to or stored on our servers.
Contact
For any privacy-related questions, contact us at support@calcsphere.net.