Our Mission
BMI Calculator exists for one simple reason: to give everyone free, instant access to an accurate body mass index calculation — without unnecessary sign-ups, paywalls, or dark patterns.
We believe health awareness tools should be simple, honest, and accessible. That's why our calculator works instantly in your browser, saves nothing to our servers, and presents results alongside clear, evidence-based context drawn from CDC guidelines.
We also believe that a number alone isn't enough. Alongside your BMI result, we provide personalized tips, a healthy weight range, and links to trusted resources — because understanding what a number means is more valuable than the number itself.
Evidence-Based
All BMI categories and health information are aligned with CDC and WHO 2026 guidelines.
Privacy First
We never collect, store, or sell your personal health data. Calculations happen entirely in your browser.
Transparency
We're upfront about the limitations of BMI and always encourage consulting a healthcare professional.
Accessible
Imperial and metric units, mobile-friendly design, and WCAG-aligned accessibility for all users.
Who We Are
BMI Calculator is an independent health information website. We are a small team of developers and health content writers committed to building simple, trustworthy digital tools.
We are not a medical organization, clinic, or healthcare provider. We do not employ licensed physicians or dietitians as staff. However, our health content is:
- Researched against peer-reviewed literature and official guidelines from the CDC, WHO, NIH, and NHS
- Reviewed periodically to reflect updated clinical standards
- Clearly labeled as informational and not a substitute for professional medical advice
If you spot an error, outdated information, or have a suggestion for improving our content, we genuinely want to hear from you.
Our Privacy Commitment
We take your privacy seriously. Here's what we will never do:
- Sell your personal data to third parties
- Store your BMI calculations or health information on our servers
- Require an account or email address to use the calculator
- Use dark patterns to trick you into accepting data collection
What we do collect (with your consent) is limited to anonymized analytics data to understand how our website is used, and advertising cookies to help fund the free service. You can manage these preferences at any time through our cookie settings. Read our full Privacy Policy for details.
Get in Touch
Have a question, suggestion, or found an error on the site? We'd love to hear from you.
Send Us an Email