This page explains what data this website collects, why, and what choices you have — including how we handle the growth data you enter about your child. If anything here is unclear, contact us using the details at the bottom.
The birth date, measurement date, weight, height, and head circumference you enter into any calculator on this site are processed entirely inside your browser. This data is never uploaded, transmitted, or stored anywhere — we have no server-side processing of it and no ability to see, collect, or retain what you enter. The moment you close or refresh the page, it's gone.
This site does not require an account, login, or any personal information to use the calculators.
This site uses a small number of first-party cookies, set directly by this website (not by an ad network):
• cookie_consent — remembers whether you accepted or declined analytics cookies, so you aren't asked again. Expires after 180 days.
• theme_override — remembers it if you manually switch between light and dark mode. Expires after 30 days.
If you're in the EU, you'll see a cookie consent banner before any analytics cookies are set. If you decline, only the two functional cookies above are used — no analytics data is collected for that visit. EU/non-EU status is determined from your browser's timezone setting, not from an IP-lookup service — no third party ever sees your IP address for this purpose.
Google Analytics (GA4) — used to understand how many people use the calculators and which pages/languages are most visited. Google Analytics sets its own cookies and may process your approximate location, device type, and browsing behavior on this site. For EU visitors, this only runs after you accept the cookie banner. See Google's Privacy Policy and Google Analytics opt-out.
Google Fonts — this site loads typefaces from Google's font CDN, which means your browser makes a direct request to Google's servers to fetch them. Google may log that request (including your IP address) per its own privacy policy linked above.
Google AdSense — this site may display ads served by Google AdSense. When ads are active, Google and its partners may use cookies to serve ads based on your visits to this and other sites. You can view or opt out of personalized advertising at Google Ads Settings.
Cloudflare (hosting) — this site is hosted on Cloudflare, which processes standard web server logs (IP address, timestamp, requested page) as part of delivering the site to you. See Cloudflare's Privacy Policy.
You can decline the cookie consent banner at any time — the calculators work identically either way.
You can clear cookies for this site at any time through your browser settings, which resets both your consent choice and your theme preference.
You can install the Google Analytics Opt-out Browser Add-on to prevent Google Analytics from collecting data on any site, including this one.
This site is designed to be used by parents, caregivers, and healthcare professionals entering growth measurements about a child — it is not directed at children as users, and we do not knowingly collect personal information from anyone under 13 (or the relevant minimum age in your jurisdiction) as a direct user of the site.
As explained above, any growth data you enter about a child (age, weight, height, head circumference) stays entirely in your browser and is never transmitted to us, stored by us, or seen by us in any form.
If this policy changes in a way that materially affects how your data is handled, we'll update the "Last updated" date above. We encourage checking back occasionally if you have concerns.
Questions about this policy or your data can be sent to privacy@growthcurvetool.com.