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At 6'5" and 140 lbs, your BMI is 16.6, placing you in the Underweight category. A BMI of 16.6 falls in the underweight range (below 18.5). This may indicate insufficient body mass for your height. Consulting a healthcare provider is recommended.
16.6
BMI
Underweight
Category
156-210
Healthy range (lbs)
+16 lbs
To healthy low
BMI 16.6: Underweight
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 156 lbs | You are here |
| 18.5 to 24.9 | Normal | 156 to 210 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 211 to 252 lbs | - |
| 30.0+ | Obese | Above 252 lbs | - |
Your BMI of 16.6 puts you in the Underweight category for someone 6'5".
To reach the lower boundary of the healthy range (156 lbs), you would need to gain approximately 16 lbs. A safe rate of weight gain is 0.5 to 1 lb per week through a calorie surplus combined with resistance training to prioritize lean mass.
Keep in mind that BMI does not account for muscle mass. Two people at 6'5" and 140 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
A BMI of 16.6 at 6'5" places you in the Underweight category. BMI (Body Mass Index) is calculated by dividing weight in pounds by height in inches squared, then multiplying by 703. The healthy range is 18.5 to 24.9, which translates to 156 to 210 lbs for someone 6'5".
At 6'5", a weight of 140 lbs gives a BMI of 16.6, which is in the Underweight category. The healthy weight range for 6'5" is 156 to 210 lbs. This is below the healthy range. Keep in mind BMI does not account for muscle mass or body composition.
A healthy weight for someone 6'5" is between 156 and 210 lbs, based on a BMI of 18.5 to 24.9. This range reflects the weights most associated with reduced risk of chronic disease. Individual factors like muscle mass, frame size, and body fat distribution also matter.
A BMI of 16.6 falls in the Underweight range. A BMI of 16.6 falls in the underweight range (below 18.5). This may indicate insufficient body mass for your height. Consulting a healthcare provider is recommended. BMI is a population-level screening tool, not a diagnostic measure. Factors like waist circumference, body fat percentage, blood pressure, and cholesterol provide a more complete picture of metabolic health.
To reach low end (156 lbs)
16 lbs to gain
To reach high end (210 lbs)
70 lbs to gain
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