BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units. Shows category and healthy weight range for your height.
Runs 100% in your browser — nothing is uploaded.
Your BMI
22.9
Normal
Healthy weight range at your height: 56.7–76.3 kg
BMI is a rough screening indicator, not a diagnosis. Muscle mass, ethnicity, age, and body composition all affect what a "healthy" weight looks like for you.
Frequently asked
How is BMI calculated?
Metric: weight_kg / height_m². Imperial: (weight_lb × 703) / height_in². The tool handles both.
Is BMI accurate for athletes?
No — BMI can't distinguish muscle from fat. Muscular athletes often score "overweight" or "obese" without being unhealthy. Use body fat percentage instead if that's you.
What are the category cutoffs?
WHO: <18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30–34.9 obese I, 35–39.9 obese II, 40+ obese III.
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