Body Mass Index (BMI) Calculator

Below is a free Body Mass Index (BMI) Calculator to help you to manage your body mass.

Body Mass Index Calculator

A body mass index calculator estimates a person’s body fat levels using their height and weight measurements. 

If you prefer to do your calculations manually, you can get your BMI through the following formula:

BMI = Weight in kilograms / height in squared meters

Why use a Body Mass Index calculator?

Manually calculating your BMI may be a little harder if you have to worry about converting measurements, say from inches into meters or pounds to kilograms. 

With a BMI calculator, you do not have to worry about unit conversion since most calculators support both the metric and imperial measurement units. 

On top of that, most BMI calculators are free and widely available online. 

What does the Body Mass Index Calculation result tell you?

BMI is an indicator of how lean or overweight one is. On average, for adults, a body mass index of:

Under 18.5 is a sign of an underweight body

18.5 to 24.9 is a sign of a healthy body

25.0 to 29.9 is a sign of an overweight body

30 and above is a sign of obesity

Interestingly, it is possible for two people to have the same BMI score on the body mass index calculator and have different body fat percentages. For example, at the same BMI score:

Men normally have less fat than women

Asians typically have more fat than whites 

Whites typically have more fat than blacks

Older people normally have more fat than young people