Privacy Policy
Last updated: March 2026
FitCalculator ("we", "our", "us") is committed to protecting your privacy. This policy explains what information we collect, how we use it, and your rights regarding your data. We operate under the principle of data minimization — we collect as little as possible and only what is necessary to provide and improve our service.
1. Information we collect
Calculator inputs
When you use our calculators, you enter personal data such as your weight, height, age, and body measurements. This data is processed entirely in your browser using client-side JavaScript. It is never sent to our servers, stored in any database, or transmitted to any third party. When you close the page, the data is gone.
Analytics data
We use privacy-friendly analytics to understand how visitors use the site. This may include anonymized data such as page views, referral sources, browser type, device type, and country of origin. We do not track individual users, and we do not use analytics cookies that identify you personally.
Advertising data
We display ads through Google AdSense, which may use cookies to serve ads based on your browsing history across other websites. Google's advertising cookies (such as the DART cookie) enable it to serve ads based on your visits to FitCalculator and other sites on the internet. You can opt out of personalized advertising by visiting Google Ads Settings.
2. How we use information
The limited data we collect is used solely to operate and improve the site. Specifically, we use analytics data to understand which calculators are most popular, identify technical issues, and plan new features. We use advertising revenue to cover hosting costs and keep the site free for everyone. We do not sell, rent, or share any data with third parties beyond what is described in this policy.
3. Cookies
FitCalculator itself does not set any first-party cookies. However, third-party services embedded on the site may set cookies:
Google AdSense may set cookies for ad personalization and frequency capping. These cookies are managed entirely by Google. You can control Google's use of advertising cookies through your Google Ad Settings.
You can also disable cookies entirely through your browser settings. Note that disabling cookies will not affect the functionality of our calculators, as they do not depend on cookies to operate.
4. Your rights under GDPR
If you are located in the European Economic Area (EEA), you have the following rights under the General Data Protection Regulation (GDPR):
Right of access: You have the right to request copies of any personal data we hold about you. In practice, because we do not store personal data from calculator inputs, there is typically nothing to provide.
Right to erasure: You have the right to request that we erase any personal data we hold about you. Again, because calculator inputs are not stored, this right primarily applies to any analytics data that may be associated with your visit.
Right to object: You have the right to object to processing of your personal data for advertising purposes. You can exercise this right by opting out of personalized ads through your Google Ad Settings or by using a browser extension that blocks advertising cookies.
Right to data portability: You have the right to request your data in a machine-readable format. As we store minimal data, this is typically not applicable.
To exercise any of these rights, please contact us at the email address listed on our contact page. We will respond within 30 days as required by law.
5. California residents (CCPA)
If you are a California resident, you have the right to know what personal information we collect and how it is used, the right to request deletion of your personal information, and the right to opt out of the sale of your personal information. FitCalculator does not sell personal information. To exercise your rights, please contact us through our contact page.
6. Children's privacy
FitCalculator is not directed at children under the age of 16. We do not knowingly collect personal information from children. If you believe a child has provided personal information to us, please contact us and we will take steps to remove that information.
7. Third-party links
Our site may contain links to third-party websites, such as product recommendations or reference materials. We are not responsible for the privacy practices or content of these external sites. We encourage you to review the privacy policies of any site you visit through links on FitCalculator.
8. Data security
FitCalculator is served over HTTPS, ensuring that all data transmitted between your browser and our servers is encrypted. Because we process calculator inputs client-side and do not store personal data on our servers, the risk of a data breach affecting your personal information is minimal.
9. Changes to this policy
We may update this privacy policy from time to time. Any changes will be posted on this page with an updated revision date. We encourage you to review this page periodically. Continued use of the site after changes constitutes acceptance of the updated policy.
10. Contact us
If you have any questions or concerns about this privacy policy or how your data is handled, please reach out through our contact page. We take every privacy inquiry seriously and will respond within 48 hours.