BMI Calculator

Type into any box. Your Body Mass Index will be calculated automatically.

Height
ft  in
Weight
lbs
Units
BMI = 24.21

Am I Overweight?

Here are the BMI standards as set by the World Heath Organization:

BMICategory
< 18.5Underweight
18.5 - 25Normal Weight
25 - 30Overweight
> 30Obese

In the United States the average BMI for adults is 27.7.

BMI Formula

Metric
BMI = kg / m2

Imperial
BMI = (lbs * 0.45359237) / (inches * 0.0254)2

Simplified
BMI = 703 * lbs / inches2

Is BMI Worth Using?

Body Mass Index is a very simplistic method of determining whether a person is overweight. It does not taken into account a person's frame, gender, or muscularity. Furthermore, at least one study has suggested that slightly overweight people may live longer than people in the "normal" range.

Nevertheless, BMI is highly correlated with body fat % and is a decent enough yardstick of a healthy weight.