At 156cm the healthy range is 45.0 to 60.6kg. This is close to the median adult female height across much of South Asia, which makes the choice of threshold particularly consequential here. On the standard WHO figures the upper bound is 60.6kg. On the supplementary cut-offs the WHO issued in 2004 for South and East As..
= 5ft 1.4in
YOUR RESULTS
BODY MASS INDEX
28.8
Overweight
BMI PRIME
1.15
Normal = 0.74–1.00
PONDERAL INDEX
18.4
kg/m³
HEALTHY WEIGHT RANGE
45.0 – 60.6 kg
Lose 9.4 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 156cm, which is about 5 ft 1 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 15.6kg, and every weight inside produces the same verdict.
Treat a reading near a boundary as near a boundary. One kilogram is 0.41 of a point here, and most people vary by more than that across a day.
At 156cm — 1.56m, or about 5 ft 1 in — a BMI of 18.5 puts the lower bound at 45.0kg and a BMI of 24.9 puts the upper bound at 60.6kg. The window is 15.6kg, or about 34 pounds. One kilogram moves the number by 0.41 of a point, so it takes roughly 2.4kg to cross a whole one. On the WHO 2004 cut-offs for South and East Asian populations the upper bound drops to 55.7kg, a reduction of 4.9kg, 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.