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What is the BMI for someone 5'8" and 100 lbs?

Answer
BMI: 15.2 (Underweight)
Normal weight range for 5'8": 122-164 lbs22 lbs below normal rangeConsider consulting a healthcare provider

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How We Calculated This

BMI = (weight × 703) / height²

(100 × 703) / (68 × 68) = 70,300 / 4624 = 15.2

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Calculated using verified formulas. Last updated March 2026.