BMI Calculator
 |
| WHO classsification of BMI and bodyweight |
Kilograms
Grams
Pounds
Meters
Centimeters
Feet
Inches
| BMI Range (kg/m2) | BMI Range (lb/ft2) | Category |
|---|---|---|
| < 18.5 | < 0.703 | Underweight |
| 18.5 – 24.9 | 0.703 – 0.956 | Normal weight |
| 25 – 29.9 | 0.957 – 1.106 | Overweight |
| 30 – 34.9 | 1.107 – 1.286 | Obese I |
| 35 – 39.9 | 1.287 – 1.473 | Obese II |
| ≥ 40 | ≥ 1.474 | Obese III |
function calculateBMI() {
var weight = parseFloat(document.getElementById(‘weight’).value);
var height = parseFloat(document.getElementById(‘height’).value);
var weightUnit = document.getElementById(‘weightUnit’).value;
var heightUnit = document.getElementById(‘heightUnit’).value;
var bmi;
if (weightUnit === ‘g’) {
weight = weight / 1000;
} else if (weightUnit === ‘lb’) {
weight = weight * 0.453592;
}
if (heightUnit === ‘cm’) {
height = height / 100;
} else if (heightUnit === ‘ft’) {
height = height * 0.3048;
} else if (heightUnit === ‘in’) {
height = height * 0.0254;
}
bmi = weight / (height * height);
var resultElement = document.getElementById(‘result’);
resultElement.innerHTML = ‘Your BMI: ‘ + bmi.toFixed(2) + ‘‘;
var referenceTable = document.getElementById(‘referenceTable’);
var category = ”;
if (bmi = 18.5 && bmi = 25 && bmi = 30 && bmi = 35 && bmi < 40) {
category = 'Obese II';
resultElement.style.color = '#ff3300';
} else {
category = 'Obese III';
resultElement.style.color = '#ff0000';
}
resultElement.innerHTML += '
Category: ‘ + category + ‘‘;
}
