BMI 5'8" / 120 lbs

BMI US Metric BMI UK Calories

Your Height

ft in

Your Weight

lbs

Your BMI position: 18.2 — Underweight (WHO)

severe

under

normal

over

obese

Your BMI Result

18.2 kg/m² Underweight

How your BMI was calculated

Formula: BMI = (weight × 703) ÷ height²

Your values: (120 lbs × 703) ÷ (68 in)²

Height squared: (68)² = 4624 in²

Result: 84,360 ÷ 4624 = 18.2 kg/m²

⚖️ Ideal Weight Range

122 lbs — 164 lbs

For 5'8" height (BMI 18.5-24.9)

🎯 Weight Goal

↑ Gain 2 lbs

Target: 122 lbs to reach healthy BMI

What does a BMI of 18.2 mean?

Your BMI of 18.2 kg/m² indicates you are underweight.

At 5'8" and 120 lbs, your weight is below the healthy range of 18.5-24.9. Being underweight can affect your immune system, bone health, and energy levels.

Recommended actions:

Aim for a target weight of 122-164 lbs
Increase calorie intake with healthy, nutrient-rich foods
Include protein and strength exercises to build muscle
Consult a doctor if you're having difficulty gaining weight

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
110 lbs -10	16.7	Underweight
115 lbs -5	17.5	Underweight
120 lbs ← you	18.2	Underweight
125 lbs +5	19.0	Normal
130 lbs +10	19.8	Normal

This table shows how your BMI would change with different weights at your current height of 5'8".

BMI 18.2 (Underweight) — 5'8" / 120 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.

Popular BMI Calculations

Quick links to common height and weight combinations:

Related Health Tools

Useful calculators and converters commonly used with BMI: