Privacy Policy

1. Overview

CalcHub ("we," "our," or "the site") provides free online calculators. This Privacy Policy explains what information is collected when you use CalcHub, how it is used, and your rights regarding that information. By using CalcHub, you agree to the practices described in this policy.

2. Information We Do Not Collect

CalcHub does not require registration or account creation. We do not collect your name, email address, or any personally identifiable information unless you voluntarily submit it through the Contact form. All calculator inputs (numbers you enter into calculators) are processed entirely in your browser and are never transmitted to our servers.

3. Information Collected Automatically

When you visit CalcHub, certain technical information is collected automatically:

• Log data: Your IP address, browser type, operating system, referring URL, pages visited, and time of visit. This data is used to diagnose technical issues and understand aggregate traffic patterns.
• Cookies: Small text files stored in your browser. CalcHub uses cookies for analytics and advertising purposes, as described below.

4. Analytics

CalcHub uses web analytics software to understand how visitors use the site — which calculators are most used, how long visitors stay, and which pages are visited most often. This data is aggregated and anonymized. It is used solely to improve the site and is not sold or shared with third parties for marketing purposes.

5. Advertising

CalcHub displays advertisements served by third-party ad networks, which may include Google AdSense. These networks may use cookies and similar technologies to serve ads based on your prior visits to this site and other sites on the internet.

Google's use of advertising cookies enables it and its partners to serve ads based on your visit to CalcHub and other sites. You may opt out of personalized advertising by visiting Google Ads Settings.

For more information on how Google uses data from sites that use its services, see How Google uses information from sites or apps that use our services.

6. Contact Form Data

If you submit a message through the Contact page, we collect your name, email address, and message content. This information is used solely to respond to your inquiry and is not shared with third parties. Contact form submissions are retained for up to 12 months and then deleted.

7. Third-Party Links

CalcHub may contain links to external websites. This Privacy Policy applies only to CalcHub. We are not responsible for the privacy practices of external sites and encourage you to review their policies before submitting any personal information.

8. Children's Privacy

CalcHub is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe a child has submitted personal information through this site, contact us and we will delete it promptly.

9. Your Rights

Depending on your location, you may have rights under applicable privacy laws (including GDPR and CCPA) to access, correct, or delete personal information we hold about you. To exercise these rights, contact us via the Contact page.

10. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will update the effective date at the top of this page. Continued use of CalcHub after any changes constitutes acceptance of the updated policy.

11. Contact

For privacy-related questions or requests, use the Contact page.