BMI Calculator

Tip: choose the unit you measure in most often.
Switch to cm for metric entry.
Enter a valid weight.
Typical adult range (lb): 80–400. Allowed: 50–1400.
Allowed total: 36–100 inches (e.g., 5 ft 10 in).
Allowed: 50–250 cm.
Calculated BMI
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UnderweightNormalOverweightObesity
Weight
Height
Units

Reference ranges: Underweight < 18.5  |  Normal 18.5–24.9  |  Overweight 25–29.9  |  Obesity ≥ 30
Metric: BMI = weight(kg) / height(m)2
US customary: BMI = weight(lb) / height(in)2 × 703
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