What does a BMI of 50.2 mean at 4'10"?
According to the WHO/NHS standard BMI classification, a Body Mass Index of 50.2 is in the Obese Class III band. At a height of 4'10" (about 147 cm), the official healthy weight range is 40.2–54 kg (88.6–119 lbs, or roughly 6 st 5 lb to 8 st 7 lb).
A weight of 240 lbs (108.9 kg) is 54.9 kg above the top of the healthy range.
A BMI above the healthy range increases the risk of cardiometabolic conditions over time. Small, sustainable changes work best: a 500-kcal daily deficit (around 0.5 kg lost per week), 150 minutes of moderate activity, and improved sleep. See our calorie calculator and reverse BMI calculator to set a target weight.
Key facts
- BMI is a screening tool, not a diagnosis. It works well for most adults but does not distinguish between muscle and fat.
- If you are very muscular or athletic, your BMI may overestimate body fat. Pair this result with a body fat percentage check.
- For South Asian, Chinese, or Black ethnic groups, NICE recommends lower thresholds (overweight at BMI 23, obese at BMI 27.5).
- For pregnancy, use our pregnancy BMI calculator with pre-pregnancy weight instead.
- For children and teens, use the child BMI calculator with age-and-sex percentile bands.