Include New BMI & Old BMI formula,you can compare difference between two formulas.

New BMI formula:
NEW BMI = 5734 * weight (lb) / height (in) ^ 2.5 = 1.3 * weight (kg) / height (m) ^ 2.5

Old BMI formula:
BMI = 703 * weight (lb) / height (in) ^ 2 = weight (kg) / height (m) ^ 2

For Example: 5 ft 4 inch, 132 lbs
NEW BMI = 23.10, Overweight
OLD BMI = 22.66, Normal Range

Of course, the human body is very complex. Bmi figures are reference values