Body Mass Index
The Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. There are two formulas for calculating BMI:- BMI = weight in kg / (height in m)2
- BMI = weight in kg / height in cm / height in cm × 10,000 (These formulas give the same answer.)
You can calculate your BMI with this BMI calculator:
BMI Calculator
wait...
wait...
- The world's tallest man (8ft 11in).
- The world's smallest man (21in).
- The world's heaviest man (92st 10lb).
- The world's lightest man (1st 1lb).
Examples of BMI Calculation
Here is an example using the first formula:- BMI = weight in kg / (height in m)2
BMI = 93 / 1.782
BMI = 93 / 3.168
BMI = 29.4
- BMI = weight in kg / height in cm / height in cm × 10,000
BMI = 93 / 178 / 178 × 10,000
BMI = 0.0029352 × 10,000
BMI = 29.4
Metric or Imperial?
This calculator converts the imperial measurements to metric with the following before applying the formula:- 1 inch = 2.54 cm
- 2.2 lbs = 1 kg
- 1 foot = 12 inches
- 1 stone = 14 pounds
For example, Simon weighs 11 stone 3lbs and is 5'4" tall.
Simon's weight in pounds = (11 x 14) + 3
Simon's weight in pounds = 157 pounds
Simon's weight in kg = 157 / 2.2
Simon's weight in kg = 71.36 kg
Simon's height in inches = (5 x 12) + 4
Simon's height in inches = 64 inches
Simon's weight in cm = 64 × 2.54
Simon's weight in cm = 162.56 cm
Simon's weight in m = 1.63 m (rounded to 2 decimal places)