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At 5'7" and 330 lbs, your BMI is 51.7, placing you in the Obese Class III category. A BMI of 51.7 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes.
51.7
BMI
Obese Class III
Category
118-159
Healthy range (lbs)
-171 lbs
To healthy high
BMI 51.7: Obese Class III
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 118 lbs | - |
| 18.5 to 24.9 | Normal | 118 to 159 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 160 to 191 lbs | - |
| 30.0+ | Obese | Above 191 lbs | You are here |
Your BMI of 51.7 puts you in the Obese Class III category for someone 5'7".
To reach the upper boundary of the healthy range (159 lbs), you would need to lose approximately 171 lbs. A sustainable rate is 0.5 to 1 lb per week, which means roughly 228 weeks at a moderate calorie deficit.
Keep in mind that BMI does not account for muscle mass. Two people at 5'7" and 330 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
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 51.7 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 51.7 at 5'7" 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 118 to 159 lbs for someone 5'7".
At 5'7", a weight of 330 lbs gives a BMI of 51.7, which is in the Obese Class III category. The healthy weight range for 5'7" is 118 to 159 lbs. This is above the healthy range. Keep in mind BMI does not account for muscle mass or body composition.
A healthy weight for someone 5'7" is between 118 and 159 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.
To reach low end (118 lbs)
212 lbs to lose
To reach high end (159 lbs)
171 lbs to lose
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