Free Online Tools
BMI Calculator
Calculate your body mass index, based on your weight and height.

Enter your weight and height, to calculate your body mass index.

Update the above form, to update the results.

Your BMI is: _

This is considered: _

BMI Categories


18.4 or less

Normal Weight

18.5 to 24.9


25 to 29.9


30 or greater

Frequently Asked Questions
What is BMI?
Body mass index (BMI) is a measure of body fat based on height and weight that applies to adults.
What does body mass index tell you?
BMI is a way to figure out your approximate level of body fat in an easy, inexpensive way. It's a number based on your weight and height that can help you tell if you are at a healthy weight for your height. In general, the higher the number, the more body fat a person has.
What are the categories of BMI?
Underweight is BMI of 18.4 or less, normal weight is BMI of 18.5 to 24.9, overweight is BMI of 25 to 29.9, and obesity is BMI of 30 or greater.
What is a good body mass index score?
A normal or healthy body mass index score is from 18.5 to 24.9.
What are the limitations of BMI?
Although BMI can be used for most adults. It may overestimate the body fat in athletes and others who have a muscular build. And it may underestimate the body fat in older persons and others who have lost muscle.
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