Privacy Policy

Last updated: 28 October 2026

Calculator data

Our calculators run entirely in your web browser using JavaScript. The values you enter are not transmitted to, or stored on, our servers.

Information we may collect

Like most websites, our hosting provider may process standard server logs (such as IP address, browser type and pages visited) for security and operation. If you email us, we will receive your email address and message.

Cookies and advertising

We may use cookies for basic site functionality and analytics. If Google AdSense is used on this site, Google and its partners may use cookies to serve ads based on your visits to this and other websites. You can opt out of personalised advertising in Google Ads Settings and learn more at Google's advertising policies.

Your choices

You can block or delete cookies in your browser settings. To ask about data we hold about you (for example, emails you sent us), contact us via our Contact page.

Changes

We may update this policy; the date above will change when we do.