BMI 155 cm / 38 kg

BMI US Metric BMI UK Calories
kg

Your BMI position: 15.8 — Severely Underweight (WHO)

Your BMI Result
15.8 kg/m² Severely Underweight

How your BMI was calculated

Formula: BMI = weight (kg) ÷ height (m)²
Your values: 38 kg ÷ (1.55 m)²
Height squared: (1.55)² = 2.4025 m²
Result: 38 ÷ 2.4025 = 15.8 kg/m²

⚖️ Ideal Weight Range

44.4 kg — 59.8 kg

For 1.55 m height (BMI 18.5-24.9)

🎯 Weight Goal

↑ Gain 6.4 kg

Target: 44.4 kg to reach healthy BMI

What does a BMI of 15.8 mean?

Your BMI of 15.8 kg/m² indicates you are severely underweight.

At 1.55 m (155 cm) and 38 kg, your body weight is significantly below the healthy range. A BMI below 16 may indicate malnutrition or an underlying health condition that requires medical attention.

Recommended actions:
  • Consult a healthcare provider to rule out underlying health issues
  • Work with a registered dietitian to develop a healthy weight gain plan
  • Focus on nutrient-dense foods and regular meals
  • Consider strength training to build muscle mass safely

Remember: BMI is a screening tool, not a diagnostic measure. It doesn't account for muscle mass, bone density, or where fat is distributed. Always consult healthcare professionals for personalized health advice.

How weight changes affect your BMI

See how gaining or losing a few kilograms would change your BMI category:

Weight BMI Category
34 kg -4 14.2 Severely Underweight
36 kg -2 15.0 Severely Underweight
38 kg ← you 15.8 Severely Underweight
40 kg +2 16.6 Underweight
42 kg +4 17.5 Underweight

This table shows how your BMI would change with different weights at your current height of 1.55 m.

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BMI 15.8 (Severely Underweight) — 155 cm / 38 kg
BMI 15.8 (Severely Underweight) — 155 cm / 38 kg — conversion chart

This BMI calculator is provided for informational purposes only and does not replace professional medical advice. Learn more about BMI, limitations, and health recommendations.

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