Privacy Policy

Last updated: September 2026. This policy covers buildcalcs.best.

The short version

Every calculator on this site runs entirely in your browser. The dimensions and quantities you enter are never sent to our servers, never stored, and never seen by us. We couldn't look at them if we tried.

What we do collect

• Aggregate analytics: we use Google Analytics 4 to count page views and tool usage (for example, which calculators get used and whether results were generated). These events carry parameters like the calculator name — never the dimensions you type or anything identifying.
• Server logs: our hosting provider (Cloudflare) keeps standard security logs such as IP address and request time, used for security and abuse prevention.

Advertising

This site shows ads, including Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on prior visits to this and other websites. You can opt out of personalized advertising via Google Ads Settings. We do not control third-party cookies; their own policies apply.

Your choices

• Block analytics or ads with any standard browser extension or tracking blocker — the calculators keep working.
• Contact us at support@buildcalcs.best about anything privacy-related.

Children's privacy

We do not knowingly collect personal information from anyone, including children — there is nothing to collect, since inputs never leave your browser.

Changes

If this policy changes materially, we'll update the date above. Continued use of the site after changes means you accept the updated policy.