Why use a BMI calculator? If you're curious about your BMI, there are several online calculators that will do the math for you. All you need to know is your height and weight.

A BMI of less than 18.5 suggests underweight. A BMI of between 18.5 and 24.9 suggests a healthy weight range. A BMI of between 25 and 29.9 may indicate overweight.

BMI is a measure of an adult man or woman’s body fat based on their height and weight. You don’t need a doctor to determine your BMI—you can simply use this Forbes Health calculator.

BMI is an estimate of body composition based on weight and height. For people of any sex, a moderate BMI is usually 18.5 to 24.9. People who know their weight and height can use a calculator to ...

For imperial, work out your height (in inches) and use the number to divide your weight in pounds (weight (lbs) ÷ height (in)²). This time, also multiply by 703.

For example, for a woman who is 140 pounds and 63 inches tall, we can calculate her BMI this way: Height in inches squared: 63 x 63 = 3,969 Weight divided by height squared: 140/3,969 = .03527 ...

For decades, healthcare professionals have used Body Mass Index (BMI) —a measure of how much mass someone has relative to their height—to identify whether a patient is at a healthy weight.

How much you should weigh for your height and age depends on several factors. Learn more about how to measure health and weight, such as BMI, body fat percentage, and other ratios.

To calculate BMI, you divide weight in kilograms (kg) by height in meters (m) squared. For imperial units, BMI is calculated by dividing weight in pounds (lb) by height in inches (in) squared and ...