Privacy Policy
Last updated: 22 October 2026.
Information we collect
Calculations run in your browser. The numbers you enter into our calculators are not sent to us and are not stored. If you contact us through the contact form, we receive your name, email address and message, and we use them only to reply to you.
Cookies and analytics
This site uses Google services (Google Site Kit / Google Analytics) which may set cookies to measure visits and improve the site. You can block cookies in your browser settings at any time.
Advertising
We may show advertising in the future. Advertising partners may use cookies to show ads based on your visits to this and other websites. You can opt out of personalised advertising through your browser or ad settings.
Advertising and Cookies (Google AdSense)
This website plans to display advertising provided by Google AdSense, and we may also work with other Google advertising partners. Advertising helps us keep every calculator on this site free to use.
Google and its partners use cookies, including the DoubleClick (DART) cookie where applicable, to serve ads based on your prior visits to this website and to other websites. Third-party vendors, including Google, use cookies to serve ads based on your visits to this site and/or other sites on the Internet.
You can opt out of personalised advertising at any time in Google Ads Settings. You can also opt out of some third-party vendors’ use of cookies for personalised advertising at aboutads.info.
To learn more about how Google collects and uses data, please read Google’s Privacy Policy.
Third-party links
Our pages may link to other websites. We are not responsible for the content or privacy practices of those sites.
Your choices
You can use every calculator on this site without giving us any personal information. To ask what data we hold about you from a contact message, or to have it deleted, contact us through the Contact page.
Changes
If this policy changes, the updated version will be published on this page with a new date.