Privacy Policy

Introduction

CalcHub ("we", "us", "our") respects your privacy. This Privacy Policy explains what information we collect, how we use it, and your choices regarding that information. By using our site, you agree to the practices described here.

1. Information We Collect

We collect only the minimum information needed to operate and improve the service:

• Calculator inputs: All values you type into our calculators are processed entirely in your browser. We do not send, log, or store these values on our servers.
• Anonymous usage data: Aggregated, anonymized analytics — page views, browser type, device type, country — to understand how the site is used.
• Contact form submissions: If you email us or submit the contact form, we receive your name, email, and message.
• Server logs: Standard web logs (IP address, request timestamp, user agent) retained for up to 30 days for security and debugging.

2. How We Use Information

We use the information we collect to:

• Operate, maintain, and improve our calculators and pages;
• Respond to your inquiries, feedback, and bug reports;
• Detect, investigate, and prevent fraudulent or unauthorized activity;
• Comply with legal obligations.

We do not sell your personal information. We do not share your contact form details with third parties except where required to deliver your message (e.g., our email provider).

3. Cookies & Tracking

CalcHub uses a minimal set of cookies:

• Essential cookies: Required for the site to function (e.g., remembering your dark/light preference).
• Analytics cookies: Anonymous, aggregated metrics (e.g., page views). You can opt out via your browser's "Do Not Track" setting.

We do not use advertising cookies or cross-site tracking pixels.

4. Third-Party Services

We use a limited number of trusted third-party services to operate the site:

• Hosting: Our pages are served from secure, encrypted infrastructure.
• Fonts & CDNs: Google Fonts and Bootstrap CDN deliver visual assets. These providers may log basic request data per their own policies.
• Analytics: Anonymous, privacy-friendly analytics for understanding site usage.

We are not responsible for the privacy practices of external sites linked from CalcHub. Please review their policies separately.

5. Your Rights

Depending on your location (e.g., EU/UK under GDPR, California under CCPA), you may have the right to:

• Access the personal information we hold about you;
• Request correction or deletion of your information;
• Object to or restrict certain types of processing;
• Withdraw consent at any time;
• Lodge a complaint with your local data protection authority.

To exercise any of these rights, contact us at privacy@calcs.pro.

6. Data Security

We use industry-standard technical and organizational measures (HTTPS encryption, access controls, regular security reviews) to protect the limited information we hold. However, no online service is 100% secure — we recommend never submitting sensitive personal data through our contact form.

7. Children's Privacy

CalcHub is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us so we can delete it.

8. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we'll revise the "Last updated" date at the top of this page. Material changes will be highlighted on the homepage for at least 30 days.

Contact

Questions about this Privacy Policy? Reach us at privacy@calcs.pro or via our contact form.