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At 5'0" and 340 lbs, your BMI is 66.4, placing you in the Obese Class III category. A BMI of 66.4 falls in the Class III (severe) obesity range (40 and above). Medical guidance is strongly recommended alongside lifestyle changes.
66.4
BMI
Obese Class III
Category
95-127
Healthy range (lbs)
-213 lbs
To healthy high
BMI 66.4: Obese Class III
| BMI | Category | Weight (lbs) | Your Status |
|---|---|---|---|
| Below 18.5 | Underweight | Below 95 lbs | - |
| 18.5 to 24.9 | Normal | 95 to 127 lbs | Goal range |
| 25.0 to 29.9 | Overweight | 128 to 152 lbs | - |
| 30.0+ | Obese | Above 152 lbs | You are here |
Your BMI of 66.4 puts you in the Obese Class III category for someone 5'0".
To reach the upper boundary of the healthy range (127 lbs), you would need to lose approximately 213 lbs. A sustainable rate is 0.5 to 1 lb per week, which means roughly 284 weeks at a moderate calorie deficit.
Keep in mind that BMI does not account for muscle mass. Two people at 5'0" and 340 lbs can have very different body compositions. Body fat percentage is a more precise indicator of health risk.
A healthy weight for someone 5'0" is between 95 and 127 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 66.4 falls in the Obese Class III range. A BMI of 66.4 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 213 lbs to reach the high end of the healthy range. The healthy BMI range (18.5 to 24.9) corresponds to 95 to 127 lbs for someone 5'0". 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.
To reach low end (95 lbs)
245 lbs to lose
To reach high end (127 lbs)
213 lbs to lose
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