Calculate a person's body mass index (BMI) number using feet and inches for length, stones and pounds for body weight.
Note:The body mass index range does not take into account whether the weight is carried as muscle or fat!
The BMI range is adjusted with age. For normal weight:
BMI = weight in pounds %divide; (height in inches)² * 703 BMI = body mass index 703 a constant used to convert pound/inch to kilogram/metre
one pound (lb avdp) = 0.45359237 kilograms (kg) one inch (in)= 0.0254 metres (m) 0.45359237 %divide; 0.0254² = 703.0695796391592783 rounded to 703/div>