Privacy policy

Last updated: July 2026

We keep this simple, because our approach to your data is simple: we collect as little as possible.

What we collect

The calculators on this site run entirely in your browser. When you type your bodyweight or a price, that information stays on your device — it is not sent to us or stored on our servers.

Like most websites, we may use privacy-respecting analytics to understand roughly how many people visit and which pages are useful. This uses aggregate, non-identifying data. We do not build advertising profiles about you.

Cookies

We aim to keep cookies to a minimum. If you click an affiliate link (for example, to a retailer to buy creatine), that retailer may set its own cookie to credit the referral. That's controlled by the retailer under their own privacy policy, not ours.

Third parties

We load web fonts from Google Fonts, which may process your IP address to serve those fonts. When you follow an outbound link, you leave this site and the destination's own privacy policy applies.

Your choices

You can block cookies and scripts in your browser settings at any time; the calculators will still work. Because we don't collect personal accounts or identifying data, there's nothing for us to delete on request — but if you have any question about privacy, you're welcome to get in touch via our About page.

Changes

If this policy changes, we'll update the date at the top of this page.