Privacy

The calculators run in your browser. What you enter isn't sent to us or stored on a server. If you copy a share link, your choices are in that link and nowhere else.

We don't use accounts, and we don't ask for your name or email.

If we add analytics or ads, they may set cookies to count visits and measure which pages help. We'll list them here, with how to opt out, before they go live.

Links to manufacturers take you to their sites, where their privacy policies apply.