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What is the BMI for someone 5'9" and 120 lbs?

Answer
BMI: 17.7 (Underweight)
Normal weight range for 5'9": 125-169 lbs5 lbs below normal rangeConsider consulting a healthcare provider

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How We Calculated This

BMI = (weight × 703) / height²

(120 × 703) / (69 × 69) = 84,360 / 4761 = 17.7

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Calculated using verified formulas. Last updated March 2026.