BMI Calculator
Calculate your Body Mass Index (BMI) using metric or imperial units.
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How to use
Enter your weight and height using the Metric tab (kg and cm) or the Imperial tab (lb and inches). The calculator will display your BMI and the corresponding category. BMI is calculated as: weight (kg) ÷ height² (m²).
Frequently Asked Questions
What is a healthy BMI range?
According to the WHO, a BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is obese.
Is BMI accurate for everyone?
BMI is a general screening tool but has limitations. It does not account for muscle mass, bone density, age, or sex. Athletes may have a high BMI despite being healthy.
What is the BMI formula?
BMI = weight in kg ÷ (height in meters)². For imperial: BMI = (weight in lb ÷ height in inches²) × 703.