Privacy Policy

Your privacy matters to us. This policy explains what data CalcBrew collects, how it is used, and how we protect your information.

Last updated: February 2026

🔒 Short version: We do not collect, store, or share your personal health data. All calculations (BMI, TDEE, etc.) run entirely in your browser. Nothing is sent to our servers.

1. Information We Collect

CalcBrew is designed with privacy by default. Here is what we do and do not collect:

What we do NOT collect:

Your name, email, or any personal identifiers (no signup required)
Your health data — weight, height, age, or calculator results
Any data entered into our calculators — it stays in your browser only

What we may collect automatically:

Anonymous usage data via analytics (page views, session duration, country-level location)
Browser type and device type for improving compatibility
Referring URL (which website sent you here)

This data is aggregated, anonymized, and never linked to any individual user.

2. Calculator Data — Stays in Your Browser

When you use any calculator on CalcBrew (BMI, TDEE, etc.), all computation happens entirely within your browser using JavaScript. The numbers you enter are never transmitted to our servers or stored anywhere. When you close the tab, the data is gone.

3. Cookies

CalcBrew uses minimal cookies for the following purposes:

Analytics cookies — to understand how visitors use the site (page visits, time on site). We use anonymized analytics only.
Advertising cookies — if display ads are shown, our advertising partners (such as Google AdSense) may use cookies to show relevant ads. These cookies are managed by the ad providers, not by CalcBrew.

You can opt out of advertising cookies via your browser settings or through tools like the Digital Advertising Alliance opt-out page.

4. Advertising

CalcBrew is free to use and is supported by display advertising. Ads are served by third-party providers (such as Google AdSense). These providers may use cookies and similar technologies to serve ads based on your interests.

We do not share any personal data with advertisers. Advertisers cannot access your calculator inputs or results.

For more information on how Google uses data in advertising, visit: Google Advertising Policies.

5. Third-Party Links

CalcBrew may contain links to external websites (for example, referenced health guidelines from WHO or NIH). We are not responsible for the privacy practices or content of those third-party sites. We recommend reviewing their privacy policies before providing any personal information.

6. Children's Privacy

CalcBrew is intended for general audiences. We do not knowingly collect any personal data from children under the age of 13. If you believe a child has submitted personal information, please contact us and we will promptly delete it.

7. Your Rights (GDPR / CCPA)

Depending on your location, you may have rights regarding your personal data, including:

The right to access data we hold about you
The right to request deletion of your data
The right to opt out of data processing for advertising

Since CalcBrew does not collect personal health data and requires no account, there is typically no personal data to request or delete. For advertising-related data rights, please contact the relevant ad provider directly.

For any privacy questions, contact us via our Contact page.

8. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, the "Last updated" date at the top of this page will be revised. We encourage you to review this policy periodically. Continued use of CalcBrew after changes constitutes your acceptance of the updated policy.

9. Contact

If you have any questions about this Privacy Policy or how your data is handled, please reach out via our Contact page.