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Calculate your body mass index in metric or US units, see your WHO weight category on a scale, and the healthy weight range for your height.
Also covers: Body mass index calculator · Healthy weight calculator · BMI chart
Body mass index
22.9
Healthy weight
WHO adult BMI scale
Healthy weight for your height
56.7 kg – 76.3 kg
BMI 18.5–24.9
BMI Prime
0.914
BMI ÷ 25; above 1 is overweight
Working
BMI is a quick screening measure for adults, not a diagnosis. It doesn't tell fat from muscle, and it doesn't apply to children and teens (who use age-based percentiles) or during pregnancy. Some health bodies use lower cut-offs for people of Asian descent. Talk to a doctor about your health.
Metric (kilograms and centimetres) or US / Imperial (pounds, feet, and inches).
Your BMI updates as you type.
Your BMI, its World Health Organization category on a colour scale, and the healthy weight range for your height.
Weight in kilograms divided by height in metres squared. 70 kg at 1.75 m is 70 ÷ 1.75² ≈ 22.9.
For adults (WHO): under 18.5 underweight, 18.5–24.9 healthy weight, 25–29.9 overweight, and 30 or more obesity (class I 30–34.9, II 35–39.9, III 40+).
No. It's a screening tool that can't tell muscle from fat, so very muscular people may read as overweight. It isn't used for children and teens, who use age- and sex-specific percentiles, or in pregnancy. Ask a health professional about your own health.
No. Nothing is saved or uploaded; the calculation happens in your browser.
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