Use this BMI Calculator to determine your body mass index quickly. Enter your weight and height to find out if you are underweight, normal, overweight, or obese.

BMI Calculator
Calculate your Body Mass Index (BMI) instantly by entering your weight and height.
What is BMI?
BMI (Body Mass Index) is a measure that uses your weight and height to estimate if you are underweight, normal, overweight, or obese. It is widely used in health assessments and fitness tracking.
BMI Formula
BMI = Weight (kg) ÷ (Height (m) × Height (m))
Why BMI Matters
BMI helps you understand if your weight is healthy relative to your height. Maintaining a healthy BMI reduces the risk of heart disease, diabetes, and other health problems.
How to Use This Calculator
Enter your weight in kilograms and height in centimeters, then click the "Calculate BMI" button. Your BMI value and category (underweight, normal, overweight, obese) will appear instantly.
Example
Weight: 70 kg, Height: 175 cm
BMI = 70 ÷ (1.75 × 1.75) ≈ 22.86 (Normal Weight)
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