Privacy policy

Last updated: November 2026.

What we collect

The calculators run in your browser, and the numbers you enter are not sent to us. This site does not use cookies, advertising trackers or accounts.

Visitor statistics

We use Cloudflare Web Analytics to count visits and see which pages are useful. It reports totals such as pages viewed, referring site, country, device type and browser. According to Cloudflare, it does not use cookies or local storage, does not fingerprint visitors, and does not track you across sites. We cannot identify individual visitors from it. SeeCloudflare's privacy policy.

Our hosting provider may keep standard server logs, such as IP address, browser type and the pages requested, for security and reliability.

Changes

If we add advertising, affiliate links or other tracking in the future, we will update this page first and describe what is collected, why, and how to opt out.

Children

This site is not directed at children under 13.