Privacy
Calculations run entirely in your browser. We do not store your inputs and there is no account to create.
Advertising on this site is served by Google AdSense. Google and its advertising partners may set cookies and use them, together with standard usage information, to serve and measure ads on this and other sites. That processing is Google's, under Google's own policies: see How Google uses information from sites or apps that use our services.
HealthTools itself does not collect, sell or share health data about you, because none of it is transmitted. The values you type never leave your device, so the ad tag has no access to them.
The full inventory of third-party scripts loaded by any page is visible in that page's source. We keep that list deliberately short: one Google ad script, and nothing else.
If you use a browser extension that blocks scripts, the calculators still work, because none of them depends on a server call to produce a result.
You can opt out of personalised advertising in Google's ad settings at google.com/settings/ads, or block the ad cookies for this domain in your browser. Neither action affects the calculators.