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BodyIndex
BMI from pounds and inches, with the classic imperial formula.
The metric BMI formula is weight(kg) ÷ height(m)² — the imperial version multiplies by 703 purely to convert pounds and inches into that same underlying metric relationship, so the resulting BMI number matches either way.
BMI doesn't distinguish muscle from fat, so it can misclassify very muscular people as overweight — it's best used as a quick population-level signal, not a standalone health verdict.
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OpenBMI
23.672
BMI = (weight × 703) / (height in inches)²
What you entered
Square the height
70²= 4900.0 in²Multiply weight by 703
165 × 703= 115995.0Divide
115995.0 ÷ 4900.0= 23.7Compare to WHO ranges
Underweight <18.5 · Healthy 18.5–24.9 · Overweight 25–29.9 · Obese 30+= Healthy weightResult
BMI: 23.672
At 165 lb and 70 in, your BMI is 23.7 — Healthy weight.