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At 5'5" and 280 lbs, your BMI is 46.6, placing you in the Obese Class III category. A BMI of 46.6 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes.
46.6
BMI
Obese Class III
Category
111-150
Healthy range (lbs)
-130 lbs
To healthy high
BMI 46.6: Obese Class III
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 111 lbs | - |
| 18.5 to 24.9 | Normal | 111 to 150 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 151 to 180 lbs | - |
| 30.0+ | Obese | Above 180 lbs | You are here |
Your BMI of 46.6 puts you in the Obese Class III category for someone 5'5".
To reach the upper boundary of the healthy range (150 lbs), you would need to lose approximately 130 lbs. A sustainable rate is 0.5 to 1 lb per week, which means roughly 174 weeks at a moderate calorie deficit.
Keep in mind that BMI does not account for muscle mass. Two people at 5'5" and 280 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
For someone 5'5", the healthy weight range based on BMI is 111 to 150 lbs. At 111 lbs, BMI is 18.5 (lower boundary of healthy). At 150 lbs, BMI is 24.9 (upper boundary of healthy). Below 111 lbs is underweight; above 150 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 46.6 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 46.6 at 5'5" 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 111 to 150 lbs for someone 5'5".
At 5'5", a weight of 280 lbs gives a BMI of 46.6, which is in the Obese Class III category. The healthy weight range for 5'5" is 111 to 150 lbs. This is above the healthy range. Keep in mind BMI does not account for muscle mass or body composition.
To reach low end (111 lbs)
169 lbs to lose
To reach high end (150 lbs)
130 lbs to lose
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