If you are unable to use the BMI calculator, or if you are interested in how BMI is calculated, this page has the mathematical formulas. You can calculate BMI using either feet, inches, and pounds, or metres, centimetres and kilogramme.


Conversion 1 cm = 0.3936 inch, 1 kg = 2.20462262 pound.

Metric Formula
Body Mass Index can also be calculated using kilogramme and metres
(or centimetres).

BMI =	Weight in kilogramme              (Height in metres) x (Height in metres)
	or
BMI = (	Weight in kilogramme              (Height in centimetres) x (Height in centimetres)	) x 10,000

For example, a person who weighs 99.79 kilogramme and is 1.905 metres (190.50 centimetres) tall has a BMI of 27.5.

99.79 kg             (1.905 m) x (1.905 m)

= 27.5

English Formula
Body Mass Index can be calculated using pounds and inches with this equation

BMI = (

Weight in pounds              (Height in inches) x (Height in inches)

) x 703

For example, a person who weighs 220 pounds and is 6 feet 3 inches tall
has a BMI of 27.5.

(

220 lbs.             (75 inches) x (75 inches)

) x 703 = 27.5