BMI Calculator — Underweight
Calculate your Body Mass Index (BMI) with this free online tool. Underweight reference and WHO classification below.
BMI Classification (WHO)
| BMI Range | Status |
|---|---|
| < 18.5 | ⚠️ Underweight |
| 18.5–24.9 | ✅ Normal |
| 25.0–29.9 | ⚠️ Overweight |
| ≥ 30.0 | 🔴 Obese |
Calculate Your BMI
Format: height(cm),weight(kg) — e.g. 170,50
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