What is body mass index or BMI used to calculate?

Body mass index (BMI) is a measure that uses height and weight to estimate a person's body fat. It is calculated by dividing a person's weight in kilograms by the square of their height in meters. BMI is used to screen for weight-related health problems such as obesity, heart disease, stroke, type 2 diabetes, and some types of cancer.

Here is the formula to calculate BMI:

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BMI = weight (kg) / (height (m))^2

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BMI can be interpreted as follows:

- BMI < 18.5: Underweight

- 18.5 ≤ BMI < 25: Normal weight

- 25 ≤ BMI < 30: Overweight

- BMI ≥ 30: Obese

It is important to note that BMI is not a perfect measure of body fat. Some people may have a high BMI but be very muscular, while others may have a low BMI but be very fat. However, BMI is a useful tool for screening for weight-related health problems.