BMI 6'6" / 135 lbs

BMI US Metric BMI UK Calories

Your Height

ft in

Your Weight

lbs

Your BMI position: 15.6 — Severely Underweight (WHO)

severe

under

normal

over

obese

Your BMI Result

15.6 kg/m² Severely Underweight

How your BMI was calculated

Formula: BMI = (weight × 703) ÷ height²

Your values: (135 lbs × 703) ÷ (78 in)²

Height squared: (78)² = 6084 in²

Result: 94,905 ÷ 6084 = 15.6 kg/m²

⚖️ Ideal Weight Range

160 lbs — 215 lbs

For 6'6" height (BMI 18.5-24.9)

🎯 Weight Goal

↑ Gain 25 lbs

Target: 160 lbs to reach healthy BMI

What does a BMI of 15.6 mean?

Your BMI of 15.6 kg/m² indicates you are severely underweight.

At 6'6" and 135 lbs, 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 pounds would change your BMI category:

Weight	BMI	Category
125 lbs -10	14.4	Severely Underweight
130 lbs -5	15.0	Severely Underweight
135 lbs ← you	15.6	Severely Underweight
140 lbs +5	16.2	Underweight
145 lbs +10	16.8	Underweight

This table shows how your BMI would change with different weights at your current height of 6'6".

BMI 15.6 (Severely Underweight) — 6'6" / 135 lbs — 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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