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At 5'11" and 320 lbs, your BMI is 44.6, placing you in the Obese Class III category. A BMI of 44.6 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes.
44.6
BMI
Obese Class III
Category
133-179
Healthy range (lbs)
-141 lbs
To healthy high
BMI 44.6: Obese Class III
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 133 lbs | - |
| 18.5 to 24.9 | Normal | 133 to 179 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 180 to 215 lbs | - |
| 30.0+ | Obese | Above 215 lbs | You are here |
Your BMI of 44.6 puts you in the Obese Class III category for someone 5'11".
To reach the upper boundary of the healthy range (179 lbs), you would need to lose approximately 141 lbs. A sustainable rate is 0.5 to 1 lb per week, which means roughly 188 weeks at a moderate calorie deficit.
Keep in mind that BMI does not account for muscle mass. Two people at 5'11" and 320 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
For someone 5'11", the healthy weight range based on BMI is 133 to 179 lbs. At 133 lbs, BMI is 18.5 (lower boundary of healthy). At 179 lbs, BMI is 24.9 (upper boundary of healthy). Below 133 lbs is underweight; above 179 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 44.6 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 44.6 at 5'11" places you in the Obese Class III 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 133 to 179 lbs for someone 5'11".
At 5'11", a weight of 320 lbs gives a BMI of 44.6, which is in the Obese Class III category. The healthy weight range for 5'11" is 133 to 179 lbs. This is above the healthy range. Keep in mind BMI does not account for muscle mass or body composition.
To reach low end (133 lbs)
187 lbs to lose
To reach high end (179 lbs)
141 lbs to lose
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