At five foot ten, the healthy range is about 129 to 174 pounds — a window of roughly 45 pounds. Compare that with five foot exactly, where the same 6.4 points of BMI buys only 33. Ten inches of height has widened the healthy window by more than a third, and it will widen by another quarter again by six foot six. That..
= 177.8 cm
YOUR RESULTS
BODY MASS INDEX
22.1
Normal weight
BMI PRIME
0.88
Normal = 0.74–1.00
HEALTHY WEIGHT RANGE
129 – 174 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 10 in, which is 178cm. 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 45 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 10 in — 70 inches, or 178cm — a BMI of 18.5 puts the lower bound at 58.5kg (129 lb) and a BMI of 24.9 puts the upper bound at 78.7kg (174 lb). The window is 20.2kg, or about 45 lb. One pound moves the number by 0.14 of a point, so it takes roughly 7 pounds to cross a whole one. On the WHO 2004 cut-offs for Asian populations the upper bound drops to 72.4kg (160 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.