Privacy policy

Last updated 4 October 2026

What you type into our calculators

All calculations run in your web browser. The numbers you enter are never sent to us or stored by us.

Advertising and cookies

This site shows ads served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.

Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and other sites on the internet. You can opt out of personalised advertising in Google Ads Settings, or opt out of some third-party vendors' use of cookies at aboutads.info.

To learn how Google uses information from sites that use its services, see How Google uses information from sites or apps that use our services.

Analytics

We may use privacy-friendly analytics provided by our host, Cloudflare, to count page views. This doesn't use cookies or identify you.