Privacy

Last updated September 29, 2026.

The calculators run entirely in your browser. What you type into them is not sent to us or stored by us.

Visit statistics

We may use Google Analytics to count visits and see which pages are useful. It uses cookies and collects things like your browser type, rough location and the pages you view. It does not collect what you type into the calculators. You can opt out with Google's browser add-on.

Ads

Some pages may show ads from Google AdSense, clearly labeled and placed below the tools. Google and its partners use cookies to show ads based on your visits to this and other sites. You can turn off personalized ads in Google's Ad Settings or learn more at how Google uses information in ads. The ads never see what you type into the calculators.

Links to other sites

Some pages link to other companies' websites. Their privacy policies apply once you leave this site.