Last updated: October 18, 2026
What we collect
The calculator runs entirely in your browser. The numbers you enter are not sent to us or stored on our server.
With your consent, we use Google Analytics to count visits and see which pages are used. Google Analytics uses cookies and collects information such as your approximate location, device type and the pages you view. You can accept or decline these cookies in the banner shown on your first visit, and change your choice at any time.
Advertising and affiliate links
This site may show ads and may contain affiliate links. If you buy a product through such a link, we may earn a commission at no extra cost to you. Ad partners may use cookies where you have consented to them.
Your rights
Depending on where you live, you can ask to see, correct or delete personal data held about you. Because we do not collect personal data through the calculator, there is usually nothing for us to provide. For questions about this policy, contact the site owner through the address in the site’s domain registration.