BMI Calculator - Calculate Your Body Mass Index
Use this BMI calculator to calculate your Body Mass Index based on your height and weight, in either metric or imperial units. Instantly see your BMI category and the healthy weight range for your height.
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How does the BMI Calculator work?
This BMI calculator computes your Body Mass Index using the formula BMI = weight (kg) ÷ height (m)². For imperial units it uses BMI = 703 × weight (lb) ÷ height (in)². The result is compared against standard WHO categories — underweight, normal weight, overweight, and obese — to help you understand where you fall relative to a healthy weight range.
Note: BMI is a general screening tool and does not account for muscle mass, bone density, or body composition. Consult a healthcare professional for personalized health advice.