Body Mass Index/ BMI Calculator

BMI CalculatorMany people use body mass index (BMI) to determine whether or not they fall within a healthy weight range. However, the accuracy of BMI in relation to actual levels of body fat is easily distorted by such factors such as muscle mass, bone structure, fitness level, gender and ethnicity, which BMI does not take into account.

Mesomorphs have a greater amount of bone and muscle mass compared to endomorphs and therefore tend to have a higher BMI. Thus, although they have a higher BMI, it may be the case that the mesomorph actually has a lower body fat percentage than the endomorph, since muscle and bone mass weighs more than fat tissue. Similarly, an ectomorphic individual could conceivably receive an unhealthily low reading, when in fact their body type makes them naturally thin no matter what they eat. Thus, ectomorphs may be able to obtain healthy readings even when their body fat percentage is higher than recommended, as their low lean mass will lower the BMI. However if you still want to check out your BMI, you can use the BMI calculator below. A visual example can be seen below, where 3 examples of people with a BMI of 25 are shown to have vastly different body composition.

Simply enter your weight and height into the calculator and use the table below to interpret the BMI results. If you do not know your weight in kg use the weight conversion calculator.

According to BMI you are
Below 18.5 Underweight
18.5 – 24.9 Normal or Healthy Weight
25.0 – 29.9 Overweight
30.0 and Above Obese


bmi calculator