Calculate your Body Mass Index instantly. Supports metric and imperial units.
Our free BMI calculator instantly calculates your Body Mass Index using your height and weight. Supports both metric (kg/cm) and imperial (lbs/ft) units.
Metric: BMI = weight(kg) ÷ height(m)²
Imperial: BMI = (weight(lbs) × 703) ÷ height(in)²
A BMI between 18.5 and 24.9 is considered normal and healthy for most adults.
BMI is a general guideline. It may not be accurate for athletes, elderly, or pregnant women.
Yes, toggle between kg/cm and lbs/ft easily.
Yes, 100% free with no registration required.
Divide your weight in kg by your height in meters squared. Example: 70 ÷ (1.75)² = 22.9