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BMI Calculator - BMI Chart

The BMI calculator is used to approximate a healthy body weight relative to an individual's height.

Many interpret the BMI values to approximate the percentage of body fat; however that is not the intention of the body mass index. Several methods can accurately measure body fat, such as hydrodensitometry (submersion in water), and calipers that measure skin fold thickness.

To calculate your BMI, enter your height and weight in the BMI calculator. Then you can use that calculation to approximate your relative condition using the BMI chart below.

We then discuss the various BMI categories for your own BMI calculation.

bmi calculator

BMI Calculator

Select your height in feet and inches
Enter your weight in pounds

bmi calculator

BMI Chart

BMI < 18.50

Underweight

BMI < 16.00

Severe Thinness

BMI 16.00 - 16.99

Moderate Thinness

BMI 17.00 - 18.49

Mild Thinness

BMI 18.50 - 24.99

Normal Weight

BMI 18.50 - 22.99

Lower Range

BMI 23.00 - 24.99

Upper Range

BMI 25.00 - 29.99

Overweight / Pre-Obese

BMI 25.00 - 27.49

Lower Range

BMI 27.50 - 29.99

Upper Range

BMI ≥ 30

Obese

BMI 30.00 - 34.99

Obese Class I

BMI 35.00 - 39.99

Obese Class II

BMI ≥ 40.00

Obese Class III

bmi chart

BMI < 18.5

"Underweight" -- If you are a competitive athlete, or have family members of similar genetic qualities - and maintain a healthy lifestyle - this BMI / body mass index range would be appropriate. However, dieting to arrive at this range could put you at risk of malnutrition, and offers no additional health benefits.

bmi calculator

BMI 18.5 - 24.9

"Normal Weight" -- In this BMI / body mass index range, you are in the healthy range for adults. You are at the lowest level of risk for hypertension, heart disease and diabetes.

bmi chart

BMI 25.0 - 29.9

"Overweight / Pre-Obese" -- If you fall into this BMI / body mass index range, you have a slightly elevated chance for hypertension, heart disease and diabetes. A moderate level of exercise and attentiveness to healthy eating can easily reduce your weight and associated health risks.

bmi calculator

BMI > 30.0

"Very Overweight / Obese" -- In this BMI / body mass index range, you have a significantly elevated risk for hypertension, heart disease and diabetes. Through exercise and healthy eating, a 10% reduction in weight can materially diminish the risk for these conditions.

bmi chart

Important BMI Notes

The BMI calculator can overestimate body fat in athletes or individuals with muscular builds.

The BMI calculator can underestimate body fat in older adults who may have lost muscle mass with aging.

The BMI calculator and BMI chart is not intended to diagnose your medical condition. If you have any questions or concerns, please see your doctor.

bmi calculator

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bmi calculator

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bmi calculator