Your data belongs to you.
We built HealthCal.org with privacy at its core. Here’s exactly what we collect, why, and what we never do with your information.
🗓 Last updated: May 25, 2025
This Privacy Policy explains how HealthCal.org (“we,” “us,” or “our”) collects, uses, and protects your information when you visit our website. We take your privacy seriously — especially because health data is personal.
Quick summary
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Calculator data stays local
Any data you enter (weight, age, height) is processed in your browser only — never sent to our servers.
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Anonymous analytics only
We collect anonymized usage statistics to improve the site — no personal profiles, ever.
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We never sell your data
Your information is never sold, rented, or traded to any third party. Full stop.
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No account required
We don’t ask for your name, email, or any personal details to use our tools.
What we collect
Information you enter into calculators
When you use our health calculators — BMI, TDEE, calorie counter, macro tracker, and others — you may enter personal data such as age, weight, height, sex, and activity level.
This data never leaves your browser. It is processed entirely on your device, is never transmitted to our servers, never stored in any database, and is never linked to your identity in any way. We cannot see it. We do not keep it. When you close the tab, it is gone.
Automatically collected data
Like most websites, we automatically receive limited technical information when you visit:
| Data Type | What It Is | Why We Collect It |
|---|---|---|
| IP Address | Your approximate location (country/city level only) | Server security and spam prevention |
| Browser & Device | Browser type, operating system, screen resolution | To ensure calculators display correctly on your device |
| Pages Visited | Which pages and tools you used (no health inputs included) | To understand which tools are most useful and improve the site |
| Referral Source | The website or search engine that sent you to HealthCal | To understand how people find us |
| Session Duration | How long you spent on each page | To identify pages that need improvement |
Cookies
We use a minimal number of cookies to operate the site and understand aggregate traffic patterns. We do not use cookies to track the health information you enter into our calculators.
| Cookie Type | Purpose | Duration | Required? |
|---|---|---|---|
| Essential | Required for the site to function correctly (e.g., session management, security tokens) | Session | Yes |
| Analytics | Aggregate, anonymized traffic data via Google Analytics — no personal health data included | Up to 2 years | No |
| Advertising | Contextual ads via Google AdSense that help fund free access to all tools | Up to 1 year | No |
You can disable non-essential cookies at any time via your browser settings or a browser extension such as uBlock Origin. Disabling cookies will not affect your ability to use any of our health calculators.
How we use your data
We use the automatically collected data described above exclusively to:
- Operate and maintain the website securely
- Improve and expand our calculator tools based on aggregate usage patterns
- Diagnose technical issues and fix errors quickly
- Understand which tools are most useful so we can build more of them
- Display contextual advertisements that help us keep every tool free
- Comply with applicable legal obligations
We do not use this data to build individual user profiles, make automated decisions about you, or infer anything about your personal health status.
What we never do
✗ We never sell, rent, or trade your data to third parties.
✗ We never store the health metrics you enter into our calculators.
✗ We never build a personal profile based on your browsing behavior.
✗ We never share your data with advertisers for targeted advertising without your explicit consent.
✗ We never send unsolicited emails — we don’t even collect email addresses unless you contact us first.
Third-party services
We use the following third-party services to operate the site. Each has its own privacy policy which we encourage you to review:
| Service | Purpose | Privacy Policy |
|---|---|---|
| Google Analytics | Anonymized, aggregate traffic analysis to help us improve the site | policies.google.com → |
| Google AdSense | Contextual advertising that funds free access to all tools | policies.google.com → |
| Cloudflare | Content delivery, DDoS protection, and site performance | cloudflare.com → |
You can opt out of Google Analytics tracking using the Google Analytics Opt-out Browser Add-on. You can manage Google ad personalization at adssettings.google.com.
Your rights
Depending on your location, you may have rights under applicable data protection laws (including GDPR for EU residents and CCPA for California residents):
- Right of access — Request a copy of any personal data we hold about you
- Right to erasure — Request deletion of your personal data from our systems
- Right to opt out — Opt out of analytics and advertising cookies via browser settings
- Right to portability — Receive your data in a portable, machine-readable format
- Right to object — Object to certain types of processing, including profiling
Because we do not collect personal health data, most data requests will result in confirmation that we hold no identifiable information about you beyond standard server logs — which are automatically deleted after 90 days.
To exercise any of these rights, contact us at privacy@healthcal.org. We will respond within 5 business days.
Children’s privacy
HealthCal.org is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately at privacy@healthcal.org and we will delete it promptly.
Changes to this policy
We may update this Privacy Policy from time to time to reflect changes in our practices or applicable law. When we do, we will update the “Last updated” date at the top of this page. We encourage you to review this page periodically.
Continued use of HealthCal.org after any changes constitutes acceptance of the updated policy. For material changes, we will make reasonable efforts to notify users via a notice on the homepage.
Contact us
Questions, concerns, or requests about this Privacy Policy or how we handle your data? We’re happy to help and aim to respond to all privacy inquiries within 5 business days.
HealthCal.org Privacy Team
📍 This site is operated independently. For legal correspondence, please use the email above.
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