Privacy Policy

Short version: we do not collect personal information from visitors. There are no accounts, no sign-ups, and nothing on this site asks for your name or email address.

What we collect

Nothing attributable to you. The calculators run entirely in your browser — the numbers you type into a tool never leave your device and are never sent to us. We do not set out to collect, store, or sell personal data, because the site has no use for it.

Analytics

We use Cloudflare Web Analytics to understand aggregate usage (for example, which tools get visited). It is a privacy-first analytics service that does not use third-party cookies and does not track individual visitors across sites. Separately, the site runs a lightweight first-party page counter that records only that a page was viewed — no identifiers, no personal data.

Advertising

This site is set up to serve ads through Google AdSense. Google and its partners may use cookies — including the DoubleClick cookie — to serve ads based on your visits to this and other sites. You can opt out of personalized advertising by visiting Google's Ads Settings. If you prefer, you can also block third-party cookies in your browser settings; the calculators keep working either way.

External links

Some pages link to external sources (for example, a cited study or a social profile). Those sites have their own privacy policies, which we do not control.

Children

This site is not directed at children under 13, and we do not knowingly collect information from children.

Changes to this policy

If this policy changes, the updated version will be posted here with a new effective date. Questions about privacy: see the contact page.