At five foot seven, the healthy range is about 118 to 159 pounds, and 159 is where the overweight category begins. It is worth being clear about what that boundary is. It was adopted as a round number for classifying populations — a convenient place to divide a continuum so that groups could be compared. Nothing happe..
= 170.2 cm
YOUR RESULTS
BODY MASS INDEX
24.1
Normal weight
BMI PRIME
0.96
Normal = 0.74–1.00
HEALTHY WEIGHT RANGE
118 – 159 lbs
Within the healthy weight range. Maintain with balanced diet and regular exercise.
BMI GAUGE
YOUR POSITION
FULL SUMMARY
WHO BMI CATEGORIES
The height is already set to 5 ft 7 in, which is 170cm. Change it if that is not yours and everything below recalculates.
Enter a weight in whichever units suit you. The two systems give the same answer to about four significant figures — the imperial form uses a rounded conversion constant.
Read the range before the category. At this height it spans about 41 lb, and every weight inside it produces the same verdict from the measure.
Treat a reading near a boundary as near a boundary. Daily variation in weight and height covers a few tenths of a BMI point on its own.
At 5 ft 7 in — 67 inches, or 170cm — a BMI of 18.5 puts the lower bound at 53.6kg (118 lb) and a BMI of 24.9 puts the upper bound at 72.1kg (159 lb). The window is 18.5kg, or about 41 lb. One pound moves the number by 0.16 of a point, so it takes roughly 6 pounds to cross a whole one. On the WHO 2004 cut-offs for Asian populations the upper bound drops to 66.3kg (146 lb), 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.