Knowing your Body Mass Index (BMI) is an important step toward understanding your overall health. Our free online BMI Calculator allows you to calculate your BMI by simply entering your age, gender, weight, and height.
The tool instantly returns your BMI score along with a category (Underweight, Normal, Overweight, Obese) based on international health standards (e.g., WHO & CDC). Whether you're planning your fitness goals or just monitoring your health, this calculator is fast, accurate, and easy to use.
You can calculate your BMI in seconds — no app, no signup, and no hassle.
🧑 Enter your age and select your gender
(optional, used for more personalized guidance)
⚖️ Enter your weight
Choose between kilograms (kg) or pounds (lbs)
📏 Enter your height
You can enter in centimeters (cm), feet/inches, or meters (m)
➕ Click “Calculate BMI”
The tool will instantly compute your BMI
📊 View your results
See your BMI score and health category (e.g., Normal, Overweight)
✅ Supports metric and imperial units (kg/lbs, cm/ft)
✅ Instant BMI calculation based on age, gender, height, and weight
✅ Responsive UI — works great on desktop and mobile
✅ Accurate health categorization (WHO classification)
✅ Clear and friendly BMI result interpretation
✅ Option to recalculate and adjust values
✅ 100% free and privacy-friendly — no data stored
BMI (Body Mass Index) is a value derived from your weight and height. It helps estimate whether you are underweight, at a healthy weight, overweight, or obese.
Yes, the calculation follows the standard formula:
BMI = weight (kg) / height (m²)
It gives you a general idea of your body fat and health category.
Weight: Kilograms (kg) and Pounds (lbs)
Height: Centimeters (cm), Feet & Inches (ft/in), and Meters (m)
BMI is a general-purpose tool and may not be accurate for children, athletes, or pregnant individuals. For medical advice, always consult a doctor.
No. Our BMI calculator is 100% free to use — no signup or installation needed.
No. All calculations are done in your browser. Nothing is stored or sent to a server.