Privacy Policy

Last updated: 2026-09-19.

The calculators run entirely in your browser. The numbers you enter are not sent to us or stored; they appear only in the page address so you can copy or bookmark a result.

Advertising and cookies

This site may show ads served by Google. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads based on visits to this site and/or other sites on the Internet. You can opt out of personalized advertising by visiting Google Ads Settings or www.aboutads.info.

Analytics

We may use aggregate traffic statistics (page views, country, referrer) to understand which calculators are useful.

Last updated 2026-09-19.