BMI Calculator

Calculate your Body Mass Index in metric or imperial units.

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Weight (pounds)

Height (feet)

Height (inches)

Weight (kilograms)

Height (centimeters)

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Enter your details

UnderNormalOverObese

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About BMI

Body Mass Index (BMI) is calculated as weight (kg) ÷ height (m)², or for imperial units, 703 × weight (lb) ÷ height (in)².

Standard categories: under 18.5 is underweight, 18.5-24.9 is normal weight, 25-29.9 is overweight, and 30+ is classified as obese.

BMI is a general screening tool and doesn't account for muscle mass, bone density, age, or body composition. It is not a diagnosis — talk to a healthcare provider for a full picture of your health.

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