At 158cm the healthy range is 46.2 to 62.2kg — a window of 16.0 kilograms, or about 35 pounds. The same range expressed in pounds sounds considerably more generous, which is a quirk of the units rather than of the measure. A pound is a small enough increment that a 35-pound window feels wide; sixteen kilograms feels t..
= 5ft 2.2in
YOUR RESULTS
BODY MASS INDEX
28.0
Overweight
BMI PRIME
1.12
Normal = 0.74–1.00
PONDERAL INDEX
17.7
kg/m³
HEALTHY WEIGHT RANGE
46.2 – 62.2 kg
Lose 7.8 kg to reach healthy weight
Above healthy range. Lifestyle changes may reduce health risks.
BMI GAUGE
YOUR POSITION
FULL SUMMARY
WHO BMI CATEGORIES
The height is already set to 158cm, which is about 5 ft 2 in. Change it if that is not yours and everything below recalculates.
Enter a weight in kilograms. Switching to imperial converts the height to the nearest inch, which is a coarser step — two adjacent even centimetre values can land on the same one.
Read the range before the category. At this height it spans 16.0kg, and every weight inside produces the same verdict.
Treat a reading near a boundary as near a boundary. One kilogram is 0.40 of a point here, and most people vary by more than that across a day.
At 158cm — 1.58m, or about 5 ft 2 in — a BMI of 18.5 puts the lower bound at 46.2kg and a BMI of 24.9 puts the upper bound at 62.2kg. The window is 16.0kg, or about 35 pounds. One kilogram moves the number by 0.40 of a point, so it takes roughly 2.5kg to cross a whole one. On the WHO 2004 cut-offs for South and East Asian populations the upper bound drops to 57.2kg, a reduction of 5.0kg, with the lower bound unchanged.
FORMULA REFERENCE TABLE
| Name | Formula | Description |
|---|---|---|
| BMI (Metric) | BMI = weight(kg) / height(m)² | Divide weight in kg by height in metres squared |
| BMI (Imperial) | BMI = 703 × weight(lbs) / height(in)² | Multiply weight in pounds by 703, divide by height in inches squared |
| Height in metres | h(m) = h(cm) / 100 | Convert centimetres to metres before squaring |
| BMI Prime | BMI Prime = BMI / 25 | Ratio of BMI to upper limit of normal (25). Values >1.00 indicate overweight |
| Ponderal Index | PI = weight(kg) / height(m)³ | More accurate than BMI for very tall or short individuals. Normal: 11–15 kg/m³ |
| Healthy weight | w = BMI × height(m)² | Rearranged BMI formula: weight(kg) for any target BMI at your height |
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Last updated: August 2, 2026 · Formula verified by EagleCalculator team · Source: WHO Global Database on Body Mass Index · Eagle-eyed accuracy for every calculation.