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Adult Body Mass Index Calculator Online

Enter your weight in kilograms

Enter your height in centimeters

Press the "Calculate" button

Your weight (kg)
Your height (cm)
RESULT
Your bmi
Comment




How is adult BMI calculated?

BMI = weight in kilograms ÷ height in meters squared. For example, 70 kg and 175 cm gives a BMI of about 22.9.

This page uses CDC adult categories for ages 20 and older: below 18.5, underweight; 18.5 to below 25, healthy weight; 25 to below 30, overweight; 30 or higher, obesity. The category uses the unrounded result.

Is BMI a diagnosis?

No. BMI is a screening measure, not a diagnosis or a direct measure of body fat. A clinician can interpret it alongside other health information.

Can these categories be used for children?

No. Children and teens require age- and sex-specific assessment. This adult calculator is not a pregnancy assessment.

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