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What is the BMI for someone 5'5" and 100 lbs?

Answer
BMI: 16.6 (Underweight)
Normal weight range for 5'5": 111-150 lbs11 lbs below normal rangeConsider consulting a healthcare provider

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How We Calculated This

BMI = (weight × 703) / height²

(100 × 703) / (65 × 65) = 70,300 / 4225 = 16.6

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Calculated using verified formulas. Last updated March 2026.