BMI Calculator
Body mass index with healthy-weight range for your height.
Result
BMI Calculator — FAQs
What is a healthy BMI?
18.5–24.9 is healthy; under 18.5 underweight, 25–29.9 overweight, 30+ obese. BMI ignores muscle mass and build — athletes often read as overweight.
Is BMI accurate?
It's a population-level screening tool — cheap and rough. It can't distinguish fat from muscle, and misses fat distribution. Waist-to-height ratio is a useful complement.
BMI formula?
kg ÷ m² — 75kg at 1.75m = 24.5. In imperial: (lb ÷ in²) × 703.
Is BMI accurate for athletes?
No — muscle is denser than fat, so muscular people score 'overweight'. Body fat % or waist-to-height ratio are better there.
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