CalculatorHub ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our website and calculator services.

We do NOT store your calculations. All calculations are performed locally in your browser. Your calculation inputs and results are never sent to our servers or stored in our database.

If you choose to create an account and save your calculation history, that data is stored securely and is only accessible to you through your account.

You can use all our calculators without creating an account or providing any personal information. Account creation is optional and only required if you want to save your calculation history or access additional features.

We use analytics services to understand how our website is used and to improve user experience:

• • Google Analytics: We use Google Analytics to collect anonymous usage statistics. This includes page views, calculator usage, and general user behavior. No personal information is collected.
• • Vercel Analytics: We use Vercel Analytics for performance monitoring. This service collects anonymous performance metrics.
• • Cookies: We use cookies to remember your preferences (like theme selection) and for analytics purposes. You can disable cookies in your browser settings.

You can opt out of Google Analytics by installing the Google Analytics Opt-out Browser Add-on.

We use cookies for the following purposes:

• • Essential Cookies: Required for the website to function properly (authentication, preferences)
• • Analytics Cookies: Help us understand how visitors use our website (anonymous data)
• • Preference Cookies: Remember your settings (theme, language, etc.)

You can control cookies through your browser settings. However, disabling cookies may affect website functionality.

We use the following third-party services:

• • Google Analytics: Website analytics (privacy policy: Google Privacy Policy)
• • Vercel: Hosting and analytics (privacy policy: Vercel Privacy Policy)
• • NextAuth: Authentication service (if you create an account)

Depending on your location, you may have the following rights regarding your personal information:

• • Right to access your personal data
• • Right to correct inaccurate data
• • Right to delete your data
• • Right to data portability
• • Right to object to processing
• • Right to withdraw consent

To exercise these rights, please contact us.

We implement appropriate technical and organizational measures to protect your personal information. However, no method of transmission over the Internet or electronic storage is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.

Our services are not directed to children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately.

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. You are advised to review this Privacy Policy periodically for any changes.