BMI Calculator — Imperial (lb, in)
The imperial BMI page works in pounds and inches, the everyday units in the United States. Because the index is defined metrically, it multiplies the pounds-over-inches-squared ratio by 703 — the conversion factor BMI = 703 × lb / in² — so you never have to translate to kilograms or meters yourself. Enter a weight in pounds and a height in inches to see your index, your WHO category, and the pound weight band that keeps BMI between 18.5 and 24.9.
Body mass index estimate
Estimated BMI
22.7
Normal weight
Reference for your height
Healthy weight band (lb) for BMI 18.5–24.9 at the height entered.
BMI = 703 × lb / in², classified against the WHO adult categories. It is a screening estimate that ignores muscle, frame, age, and sex — not a medical diagnosis or dietary advice. Consult a healthcare professional before acting on this number.