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At 5'8" and 320 lbs, your BMI is 48.7, placing you in the Obese Class III category. A BMI of 48.7 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes.
48.7
BMI
Obese Class III
Category
122-164
Healthy range (lbs)
-156 lbs
To healthy high
BMI 48.7: Obese Class III
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 122 lbs | - |
| 18.5 to 24.9 | Normal | 122 to 164 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 165 to 197 lbs | - |
| 30.0+ | Obese | Above 197 lbs | You are here |
Your BMI of 48.7 puts you in the Obese Class III category for someone 5'8".
To reach the upper boundary of the healthy range (164 lbs), you would need to lose approximately 156 lbs. A sustainable rate is 0.5 to 1 lb per week, which means roughly 208 weeks at a moderate calorie deficit.
Keep in mind that BMI does not account for muscle mass. Two people at 5'8" and 320 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
A BMI of 48.7 at 5'8" 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 122 to 164 lbs for someone 5'8".
At 5'8", a weight of 320 lbs gives a BMI of 48.7, which is in the Obese Class III category. The healthy weight range for 5'8" is 122 to 164 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 5'8" is between 122 and 164 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 48.7 falls in the Obese Class III range. A BMI of 48.7 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes. 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 (122 lbs)
198 lbs to lose
To reach high end (164 lbs)
156 lbs to lose
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