BMI for 6'3" 125 lbs
Calculate your Body Mass Index for a height of 6'3" and weight of 125 lbs.
Your BMI
15.6
Severely Underweight
A person 6'3" tall weighing 125 lbs may need to gain 23 lbs to reach a healthy BMI of 18.5 or higher.
Healthy Range
148 – 199 lbs
for 6'3" (BMI 18.5–24.9)
Your Status
Severely Underweight
BMI 15.6
Should You Lose Weight?
Your weight is in the healthy range
Health Assessment for 6'3" 125 lbs
Severe underweight is associated with nutritional deficiencies, weakened immune system, osteoporosis, and fertility issues. Medical evaluation is strongly recommended.
To maintain your healthy weight, use our TDEE calculator to find your maintenance calories. Our macro calculator can help you balance your nutrition for optimal health.
Healthy BMI Weight Range for 6'3"
For a person who is 6'3" tall, the healthy BMI range of 18.5 to 24.9 corresponds to a weight range of 148 to 199 lbs. Your current weight of 125 lbs places you in the Severely Underweight category.
BMI for 125 lbs at Similar Heights
BMI for 6'3" at Nearby Weights
BMI Classification Table
| Classification | BMI Range | Weight Status |
|---|---|---|
| Underweight | < 18.5 | Below healthy weight |
| Normal | 18.5 – 24.9 | Healthy weight |
| Overweight | 25 – 29.9 | Excess weight |
| Obese Class I | 30 – 34.9 | Moderate obesity |
| Obese Class II | 35 – 39.9 | Severe obesity |
| Obese Class III | 40+ | Very severe obesity |
Frequently Asked Questions
Q: What does a BMI of 15.6 mean for someone 6'3" tall?
A BMI of 15.6 for a 6'3" individual classifies you as Severely Underweight. Severe underweight is associated with nutritional deficiencies, weakened immune system, osteoporosis, and fertility issues. Medical evaluation is strongly recommended.
Q: What is the ideal weight for someone 6'3" tall?
For a height of 6'3", the healthy weight range is 148 to 199 lbs (BMI 18.5 to 24.9). Use our BMI calculator to check any weight.
Q: How is BMI calculated for 6'3" 125 lbs?
BMI = (weight in lbs ÷ height in inches²) × 703. For 6'3" (75 inches) and 125 lbs: (125 ÷ 75²) × 703 = 15.6.