Privacy Policy
What GrowthChart does and does not collect.
The short version
This site is a static reference site. There are no accounts, no logins and no forms that ask for personal information. Anything you type into a calculator on this site is processed in your own browser and is never transmitted to us.
Local storage
We store two small preferences on your own device so the site behaves sensibly on your next visit: your light/dark theme choice and, where a calculator exists, your last-entered body weight or units. These never leave your browser and you can clear them at any time through your browser settings.
Analytics
We use privacy-respecting aggregate traffic measurement to understand which pages are useful. We do not build advertising profiles from it and we do not sell data.
Advertising
This site is funded by Google AdSense. Google and its partners may use cookies or device identifiers to serve and measure advertising, including personalised advertising where you have given consent. You can manage your advertising choices at myadcenter.google.com, and read how Google uses information from sites that use its services at policies.google.com/technologies/partner-sites. Visitors in the EEA, UK and Switzerland are shown a consent message before personalised advertising cookies are set.
Third parties
Fonts are served by Google Fonts and pages are hosted by Vercel; both receive your IP address as a necessary part of delivering the page, as any web host does.
Children
This site is a general-audience reference and is not directed at children under 13.
Contact
Questions about this policy: get in touch.
Last updated: 2026-07-28