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

Find the answers to common questions about calculating BMI

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.

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