Privacy policy

Last updated: October 2026

What we collect

The calculators run entirely in your browser. The values you type are never sent to a server, logged or stored.

Standard server logs may record IP address, user agent, referring page and timestamp for security and aggregate traffic analysis.

Cookies and advertising

This site may display advertising served by third parties, including Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites.

Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and other sites on the internet. You can opt out of personalized advertising by visiting Google Ads Settings.

Analytics

Aggregate, privacy-friendly analytics may be used to measure page views and referrers. No cross-site profiles are built from it.

Affiliate links

Some links to products are affiliate links. If you buy through them, the site may earn a commission at no extra cost to you. This never affects the calculated result.

Your choices

You can block cookies in your browser at any time. The calculators will keep working — they do not depend on cookies.

Contact

Questions about this policy: buildcalc.contact@proton.me.