This BMI calculator provides a quick and free assessment of your Body Mass Index (BMI), a widely used metric for estimating body fat. Whether you’re an athlete, bodybuilder, or simply aiming for a healthier lifestyle, understanding what is your BMI might be useful for you.
Body Mass Index is calculated using a simple formula, your weight (kg) divided by the square of your height (cm), if you use imperial system you will need to do the same but with pounds and inches and then multiply everything for a 703 factor
BMI Calculator
Chart showing body mass index (BMI) for a range of heights and weights in both metric and imperial. Colours indicate BMI categories defined by the World Health Organization; underweight, normal weight, overweight, moderately obese, severely obese and very severely obese
Wikipedia
Please note that the BMI does not take into consideration your muscle mass so if you are an athlete with a 6-pack and a lot of muscles you might still end up being considered overweight (>25) according to this index, in this case I would consider it as a compliment more than as something concerning.