Privacy Policy

The short version: the numbers you type into a calculator never leave your browser. We do not have a server that receives them, because the arithmetic runs in JavaScript on your own device.

What we do not collect

• We do not ask for your name, email address, or an account.
• We do not transmit the values you enter into any calculator.
• We do not sell, rent, or share personal data with third parties.
• We do not run advertising networks or cross-site behavioural trackers.

What is collected automatically

Like any website, our host (Cloudflare) records standard request logs — IP address, user agent, requested URL, timestamp and response status — for security and abuse prevention. These logs are retained by Cloudflare under their own retention policy. We do not build profiles from them.

Cookies

The site itself sets no cookies. If we later add privacy-friendly aggregate analytics (no cookies, no cross-site identifiers), this page will be updated first and the change dated in the footer.

Outbound links

Some outbound links are affiliate links. When you follow one, the destination site may set its own cookies and will handle your data under its own privacy policy — we have no control over that. See our affiliate disclosure.

Your rights

Because we do not hold personal data about you, there is normally nothing to access, correct or delete. If you believe we hold something about you (for example, an email you sent us), write to us via the contact page and we will respond within 30 days.

Children

This site is aimed at adults running or planning a business. It is not directed at children under 16 and we do not knowingly collect their data.

Changes

If this policy changes materially, we will update the date in the page footer. Continued use after a change means you accept the revised policy.