What is body mass index (bmi)? Body mass index (bmi) is a medical screening tool that measures the ratio of your height to your weight to estimate the amount of body fat you have. Healthcare providers …

Bmi is a simple calculation that uses a person’s height and weight to designate a classification. The formula is bmi = kg/m 2; Kg is a person’s weight in kilograms and m 2 is height in metres squared. Bmi is calculated for both men and women by dividing weight in kilograms by height in meters squared.