Is this BMI Calculator free to use?

Yes, BMI Calculator is 100% free to use online with no installation or account required.

How do I use the BMI Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

BMI Calculator — Free Online Tool

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Calculate Body Mass Index and weight category

Note: BMI = weight(kg) / height(m)². WHO categories: Underweight <18.5, Normal 18.5–24.9, Overweight 25–29.9, Obese ≥30.

Body Measurements

Weight (kg)

Height (cm)

⚠️ Not medical advice. For educational purposes only. Always consult a qualified healthcare professional before making health or treatment decisions.