Calculators

BMI Calculator

Body Mass Index & weight category.

Height (cm)Weight (kg)

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Where you sit on the BMI scale

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18.52530

Underweight < 18.5Normal 18.5–24.9Overweight 25–29.9Obese 30+

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Healthy weight for your height

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BMI Prime

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Ponderal Index

This free BMI calculator finds your Body Mass Index from your height and weight in metric or imperial units, then shows which category it falls into — underweight, normal, overweight or obese, using standard WHO ranges. BMI is a quick screening figure, not a diagnosis. All calculations run in your browser.