BMI Calculator
Calculate your Body Mass Index. Supports both metric (kg, cm) and imperial (lbs, inches) units.
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Your BMI
BMI categories
Underweight Below 18.5
Normal weight 18.5 – 24.9
Overweight 25 – 29.9
Obese 30 and above
What is BMI?
Body Mass Index (BMI) is a simple measure that uses your height and weight to estimate whether you have a healthy body weight.
BMI is a screening tool, not a diagnostic measure. A doctor should evaluate individual health using additional tests and factors.
BMI Formula
Metric: BMI = weight (kg) ÷ height² (m²)
Imperial: BMI = 703 × weight (lbs) ÷ height² (in²)