This highly beneficial browser extension can calculate the body mass index of a user. The BMI number is one of the most common tools used to measure the body fat of a person.

The app will measure your height using metric or imperial units. The measurement of your weight will depend on which system you use. In either case, enter the numbers in the empty boxes then press the calculate button. It will show your BMI number.

Overall, this program will help you check if you're healthy, if you should gain weight, or if you should be worried about your weight. After calculating your BMI, you can get a message that says if you are underweight, normal, overweight, or obese. It also shows you the percentage of fat and muscle you have. The information is useful for health problems, health care, or to keep you fit.