Last updated: July 27, 2026
GravelCalc (“we,” “our,” or “us”) operates this website. This policy explains what information is collected when you use the site and how it is used.
Information We Collect
Our calculators run entirely in your browser. The measurements you enter are processed on your device and are not transmitted to or stored on our servers. Like most websites, we collect standard analytics data (pages visited, approximate location, device type, referral source) to understand how the site is used and improve it.
Cookies and Advertising
This site is supported by advertising. Third-party ad vendors, including Google, may use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this site and other sites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings. Third-party vendors' use of cookies is described in their own privacy policies.
Analytics
We may use analytics services such as Google Analytics to collect anonymized usage statistics. These services use cookies and similar technologies; the data collected is governed by their respective privacy policies.
Your Choices
You can disable cookies in your browser settings, use ad-blocking software, and opt out of personalized advertising through the links above. The calculators remain fully functional with cookies disabled.
Children's Privacy
This site is not directed at children under 13 and we do not knowingly collect personal information from children.
Changes and Contact
We may update this policy from time to time; the latest version will always be posted on this page. Questions? Contact us.