Privacy Policy | Circumference to Diameter

Privacy Policy

Last updated: October 2026

This Privacy Policy explains how Circumference to Diameter ("we," "our," or "us") collects, uses, and protects information when you visit circumferencetodiameter.com.

1. Information We Collect

Calculator Usage
All geometric calculations are performed entirely within your browser. No calculation inputs or results are transmitted to our servers or stored in any way.

Contact Form
If you contact us via our contact form or email, we collect your name, email address, and message content solely to respond to your inquiry. Messages sent through the contact form are processed by Web3Forms, a third-party form service, in order to deliver them to us. We do not sell this information or use it for marketing.

Automatically Collected Data
Like most websites, our servers may automatically collect standard technical data when you visit, including your IP address, browser type, operating system, referring URL, and pages visited. This data is used for site security and aggregate performance monitoring only.

2. Cookies and Tracking Technologies

We use cookies and similar tracking technologies on this site. These include:

  • Essential cookies, required for basic site functionality
  • Analytics cookies, used by Google Analytics and Microsoft Clarity to help us understand how visitors use the site (described below).
  • Advertising cookies, this site displays ads served by Google AdSense. Google and its partners use cookies to serve ads based on your prior visits to this and other websites. These cookies allow Google to show you more relevant advertisements.

You can opt out of personalized Google advertising by visiting Google's Ads Settings. You can also opt out of third-party vendor cookies by visiting the Network Advertising Initiative opt-out page.

For more information on how Google uses data collected through its advertising services, visit: How Google uses data when you use our partners' sites or apps.

Google Analytics
We use Google Analytics, a web analytics service provided by Google, to understand how visitors use the website, for example which pages are visited, how visitors arrive at the site and general usage and performance patterns. We use this information to improve the site. Google Analytics uses cookies and similar technologies, and Google processes the information it collects in accordance with its own privacy policy. You can prevent Google Analytics from using your data by installing the Google Analytics Opt-out Browser Add-on.

Microsoft Clarity
We use Microsoft Clarity, a service provided by Microsoft, to understand how visitors interact with the website. Clarity may collect information about how pages are used, such as clicks, scrolling and mouse movement, and may provide usage statistics, heatmaps and session replays of those interactions. Clarity uses cookies and similar technologies, and Microsoft processes the information it collects in accordance with the Microsoft Privacy Statement.

3. Third-Party Advertising (Google AdSense)

We participate in the Google AdSense program. Google AdSense uses cookies, web beacons, and similar technologies to serve ads on our site. Third-party vendors, including Google, use these cookies to serve ads based on a user's previous visits to our website 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 our site and other sites on the internet. Users may opt out of personalized advertising by visiting Ads Settings.

4. How We Use Information

We use the information we collect to:

  • Operate and improve the website
  • Respond to user inquiries
  • Monitor site performance and security
  • Serve relevant advertisements through Google AdSense

We do not sell, rent, or trade your personal information to any third party.

5. Data Retention

Contact form submissions are retained only as long as necessary to resolve your inquiry. We do not maintain long-term personal data records.

6. Children's Privacy

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

7. Your Rights

Depending on your location, you may have rights including:

  • The right to access personal data we hold about you
  • The right to request correction or deletion of your data
  • The right to object to or restrict certain processing

To exercise any of these rights, contact us at contact@circumferencetodiameter.com.

8. Changes to This Policy

We may update this Privacy Policy periodically. The date at the top of this page reflects the most recent revision. We encourage you to review this page regularly.

9. Contact

If you have any questions about this Privacy Policy, please contact us at:
contact@circumferencetodiameter.com