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At 6'6" and 340 lbs, your BMI is 39.3, placing you in the Obese Class II category. A BMI of 39.3 falls in the Class II obesity range (35 to 39.9). This level is associated with higher risk of cardiovascular disease, type 2 diabetes, and joint issues.
39.3
BMI
Obese Class II
Category
160-215
Healthy range (lbs)
-125 lbs
To healthy high
BMI 39.3: Obese Class II
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 160 lbs | - |
| 18.5 to 24.9 | Normal | 160 to 215 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 216 to 258 lbs | - |
| 30.0+ | Obese | Above 258 lbs | You are here |
Your BMI of 39.3 puts you in the Obese Class II category for someone 6'6".
To reach the upper boundary of the healthy range (215 lbs), you would need to lose approximately 125 lbs. A sustainable rate is 0.5 to 1 lb per week, which means roughly 167 weeks at a moderate calorie deficit.
Keep in mind that BMI does not account for muscle mass. Two people at 6'6" and 340 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
For someone 6'6", the healthy weight range based on BMI is 160 to 215 lbs. At 160 lbs, BMI is 18.5 (lower boundary of healthy). At 215 lbs, BMI is 24.9 (upper boundary of healthy). Below 160 lbs is underweight; above 215 lbs is overweight.
BMI only uses height and weight. Body fat percentage measures actual fat tissue as a proportion of total weight, making it more precise for body composition assessment. Two people with the same BMI of 39.3 can have very different body fat percentages depending on muscle mass. Athletes often have BMI values above 25 while maintaining low body fat. Use body fat percentage to set specific fitness goals.
A BMI of 39.3 at 6'6" places you in the Obese Class II 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 160 to 215 lbs for someone 6'6".
At 6'6", a weight of 340 lbs gives a BMI of 39.3, which is in the Obese Class II category. The healthy weight range for 6'6" is 160 to 215 lbs. This is above the healthy range. Keep in mind BMI does not account for muscle mass or body composition.
To reach low end (160 lbs)
180 lbs to lose
To reach high end (215 lbs)
125 lbs to lose
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