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At 5'4" and 270 lbs, your BMI is 46.3, placing you in the Obese Class III category. A BMI of 46.3 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes.
46.3
BMI
Obese Class III
Category
108-145
Healthy range (lbs)
-125 lbs
To healthy high
BMI 46.3: Obese Class III
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 108 lbs | - |
| 18.5 to 24.9 | Normal | 108 to 145 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 146 to 174 lbs | - |
| 30.0+ | Obese | Above 174 lbs | You are here |
Your BMI of 46.3 puts you in the Obese Class III category for someone 5'4".
To reach the upper boundary of the healthy range (145 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 5'4" and 270 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
A BMI of 46.3 falls in the Obese Class III range. A BMI of 46.3 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.
You would need to lose approximately 125 lbs to reach the high end of the healthy range. The healthy BMI range (18.5 to 24.9) corresponds to 108 to 145 lbs for someone 5'4". A sustainable rate of weight loss is 0.5 to 1 lb per week through a calorie deficit of 250 to 500 calories per day.
BMI is a useful screening tool but has real limitations. It does not distinguish between muscle and fat, so muscular athletes often show elevated BMI despite low body fat. It also does not account for where fat is stored. Waist-to-height ratio and body fat percentage are more precise measures. Use BMI as a starting point, not a definitive health verdict.
For someone 5'4", the healthy weight range based on BMI is 108 to 145 lbs. At 108 lbs, BMI is 18.5 (lower boundary of healthy). At 145 lbs, BMI is 24.9 (upper boundary of healthy). Below 108 lbs is underweight; above 145 lbs is overweight.
To reach low end (108 lbs)
162 lbs to lose
To reach high end (145 lbs)
125 lbs to lose
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