Simple and honest — we don't collect your health data.
Last updated: June 2025
🔒 The health data you enter into Natoras calculators (weight, height, age, etc.) is processed entirely in your browser. It is never sent to our servers, stored, or shared with anyone.
Natoras ("we", "us", "our") operates the website natoras.com, a free collection of health and fitness calculators. To contact us: [email protected]
We collect minimal data necessary to operate the website:
We do not collect:
All calculations are performed using JavaScript running locally in your web browser. When you enter data into a calculator and click "Calculate", the numbers are processed on your device and the result is displayed on-screen. No data is transmitted to our servers at any point during this process.
Natoras does not use tracking cookies, advertising cookies, or analytics cookies. Cloudflare, our hosting provider, may set a security cookie (__cf_bm) to distinguish humans from bots. This cookie does not track your browsing behaviour and expires when you close your browser.
We use Cloudflare Pages to host this website. Cloudflare processes connection metadata (IP address, request headers) as part of routing traffic and providing DDoS protection. You can read Cloudflare's privacy policy at cloudflare.com/privacypolicy.
We do not use Google Analytics, Facebook Pixel, advertising networks, or any other third-party tracking services.
Natoras is not directed at children under 13. We do not knowingly collect personal information from children. Some calculators (such as baby growth) are intended to be used by parents or healthcare providers on behalf of children — in these cases, no personal data is stored.
Because we do not collect or store personal health data, there is generally nothing to access, correct, or delete. If you have emailed us and wish for that correspondence to be deleted, contact us at [email protected] and we will remove it promptly.
Depending on your location, you may have rights under GDPR (EU), CCPA (California), or other applicable privacy laws. We honour these rights to the extent of data we hold.
Our website is served over HTTPS, which encrypts all data in transit between your browser and our servers. Since health data never leaves your device, there is no server-side database of personal health information to protect.
The calculators and information on Natoras are for educational and informational purposes only. Results are estimates based on general population formulas and are not medical diagnoses. Always consult a qualified healthcare professional before making decisions about your health.
We may update this privacy policy from time to time. Material changes will be reflected in the "Last updated" date at the top of this page. Continued use of the site after a change constitutes acceptance of the revised policy.
Questions about this policy? Email us at [email protected] and we'll respond within 2 business days.