Privacy policy

Last updated 2026-10-29.

What we collect

The calculators run entirely in your browser. The numbers you enter are not sent to us or stored.

Our hosting provider may keep standard server logs, such as IP address, browser type and pages visited, for security and basic traffic statistics.

Cookies and advertising

This site may show ads from Google AdSense. Google and its partners use cookies to serve ads based on your visits to this and other websites. You can opt out of personalized advertising at Google Ad Settings, or learn more at aboutads.info.

Affiliate links

When you click a product link, the retailer (for example, Amazon) may set a cookie to credit us for the referral. Their own privacy policies apply on their sites.

Contact

Questions about this policy can be sent through the contact details on our about page.