## Body Mass Index (BMI) Calculator

Use our free calculator to determine BMI based on height in inches and weight in pounds (lbs)

• What is BMI and how is it measured?

The formula is: BMI = (Weight in pounds) divided by (Height in inches squared) An ideal BMI score is one that falls between 18.5 and 24.9, indicating that a person is within the healthy weight range for his or her height.

• What is BMI in physical fitness?

BMI (body mass index) is a calculated number representing a person's level of fat or obesity level. According to the Centers for Disease Control and Prevention (CDC), a BMI of 30 or above indicates obesity. BMI levels are broken down by weight range and are as follows: BMI < 18.5 is underweight.

• How do you calculate BMI?

Formula: weight (lb) / [height (in)]^2 x 703.Calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703.Example: Weight = 150 lbs, Height = 5'5” (65″)Calculation: 150 ÷ (65 x 65) x 703 = 24.96.

• What are the BMI score ranges and what do they mean?

According to the National Institutes of Health (NIH):
A BMI of less than 18.5 means that a person is underweight.
A BMI of between 18.5 and 24.9 is ideal.
A BMI of between 25 and 29.9 is overweight.
A BMI over 30 indicates obesity.