At 65kg the healthy heights run from 162 to 187cm on the standard thresholds. Apply the WHO's 2004 supplementary cut-offs for South and East Asian populations — overweight from a BMI of 23 rather than 25 — and the shortest suitable height rises to 168cm. The tallest is unchanged, because the lower bound of 18.5 did no..
= 5ft 8.9in
YOUR RESULTS
BODY MASS INDEX
21.2
Normal weight
BMI PRIME
0.85
Normal = 0.74–1.00
PONDERAL INDEX
12.1
kg/m³
HEALTHY WEIGHT RANGE
56.7 – 76.3 kg
Within the healthy weight range. Maintain with balanced diet and regular exercise.
BMI GAUGE
YOUR POSITION
FULL SUMMARY
WHO BMI CATEGORIES
The weight is already set to 65kg, which is about 143 pounds. Enter your height and the BMI follows — until you do, the figure is undetermined.
Both unit systems are seeded, so switching between kilograms and pounds keeps the same weight rather than reverting to a default.
Read the band of heights rather than any single BMI. At 65kg the healthy band runs 162 to 187cm, and that band is what a weight actually determines.
A reading near a category boundary should be read as near a boundary. Most people vary by one to two kilograms across a day from food and fluid alone.
At 65kg — about 143 pounds — the BMI is undetermined until a height is supplied. At 150cm it is 28.9, at 175cm 21.2, and at 200cm 16.3: a spread of 12.6 points from one unchanged weight, which is wider than the entire healthy band. Inverting the formula gives what a weight can determine: 65kg sits inside the healthy BMI band for heights between 162cm and 187cm, a window 25cm wide, or roughly 5ft 4in to 6ft 2in. On the WHO 2004 cut-offs for South and East Asian populations the shortest suitable height rises to 168cm, because those thresholds lower the top of the BMI band while leaving 18.5 in place.
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 |
Ideal Body Weight Calculator
Calculate instantly →
Body Fat Percentage Calculator
Calculate instantly →
BMI Calculator for Men
Calculate instantly →
BMI Calculator for 184cm Height
Calculate instantly →
BMI for Age Calculator (Children)
Calculate instantly →
Waist-to-Hip Ratio Calculator
Calculate instantly →
Waist-to-Height Ratio Calculator
Calculate instantly →
Lean Body Mass Calculator
Calculate instantly →
Healthy Weight Range Calculator
Calculate instantly →
BMI Calculator for Women
Calculate instantly →
BMI Calculator for 5 ft 0 in
Calculate instantly →
BMI Calculator for 5 ft 1 in
Calculate instantly →
BMI Calculator for 5 ft 2 in
Calculate instantly →
BMI Calculator for 5 ft 3 in
Calculate instantly →
BMI Calculator for 5 ft 4 in
Calculate instantly →
BMI Calculator for 5 ft 5 in
Calculate instantly →
BMI Calculator for 5 ft 6 in
Calculate instantly →
BMI Calculator for 5 ft 7 in
Calculate instantly →
BMI Calculator for 5 ft 8 in
Calculate instantly →
BMI Calculator
Calculate instantly →
Last updated: August 2, 2026 · Formula verified by EagleCalculator team · Source: WHO Global Database on Body Mass Index · Eagle-eyed accuracy for every calculation.