BMI Calculator (Body Mass Index)
Calculate your Body Mass Index (BMI), healthy weight range, and prime health category with clinical accuracy.
⚙️ Body Measurements
25 Yrs
Yrs
160 cm
170 cm
175 cm
180 cm
cm
60 kg
70 kg
80 kg
kg
Underweight (<18.5)
Normal (18.5-24.9)
Overweight (25-29.9)
Obese (30+)
Healthy Weight Range
56.7 – 76.3 kg
Ideal Body Weight (Devine)
70.7 kg
BMI Prime
0.91
Ponderal Index
13.1 kg/m³
WHO & CDC Body Mass Index (BMI) Classifications
| BMI Category | BMI Range (kg/m²) | Health Risk Level |
|---|---|---|
| ● Underweight | < 18.5 | Increased risk of nutritional deficiency & osteoporosis |
| ● Normal / Healthy Weight | 18.5 – 24.9 | Lowest cardiovascular and metabolic risk |
| ● Overweight | 25.0 – 29.9 | Moderate risk of heart disease, hypertension & diabetes |
| ● Obese Class I | 30.0 – 34.9 | High risk of metabolic syndrome |
| ● Obese Class II / III | 35.0 & Above | Very high clinical risk |
Frequently Asked Questions About BMI
BMI is calculated by dividing your body weight in kilograms by your height in meters squared: BMI = weight(kg) / [height(m)]². For imperial measurements: BMI = 703 × weight(lbs) / [height(in)]².
BMI does not directly differentiate between muscle and fat mass. Athletes with high muscle mass may have a high BMI despite having low body fat. In such cases, use our Body Fat Calculator or FFMI Calculator.