The calculators
What you type into the calculators is processed on your own phone or computer. It isn’t sent anywhere or stored.
Visit statistics
We count visits with our own system, with no cookies and nothing stored on your device: which page you open, how long it stays on screen and how far you scroll, which site you came from, your country (worked out from your IP address, which isn’t stored) and whether you use a phone or a computer. To avoid counting the same person twice on the same day we use a fingerprint that changes every day and can’t tell us who you are. It’s only used to know which content people find most useful, and it’s never shared.
Language
If you switch language with the button in the header, your browser remembers that choice (in its local storage, not in a cookie) so it can take you to the same language next time. You can clear it from your browser settings.
Advertising
This site may show Google AdSense ads. Google and its partners may use cookies to show ads based on your visits to this and other sites. You can turn off personalised advertising in Google’s ad settings and learn more about how Google uses cookies in advertising. Once ads are active, in the countries that require it you’ll be asked for your consent first.
Links to other sites
Our articles link to official sources and other websites. When you visit them, their own privacy policies apply.
Your rights
Because we don’t store data that identifies you, we have no personal data of yours to hand over or delete. If you have any questions about this policy, you can write to us.