The BMI calculation divides an adult's weight in kilograms (kg) by their height in metres (m) squared.
For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:
squaring your height: 1.73 x 1.73 = 2.99
dividing 70 by 2.99 = 23.41
To calculate women's bmi, you must check the option of women in the first line so that the body mass density calculator will provide you with the height and weight entered for the desired gender.