BMI Calculator


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Clinical BMI Calculator





Enter values to calculate
< 18.5 Underweight
18.5 – 24.9 Normal Weight
25 – 29.9 Overweight
≥ 30 Obesity

// Real-time Calculation function calculateBMI() { const weightUnit = document.getElementById('weightUnit').value; const heightUnit = document.getElementById('heightUnit').value; const weight = parseFloat(document.getElementById('weight').value) || 0; let heightValue = 0;

if (heightUnit === 'ft') { const feet = parseFloat(document.getElementById('feet').value) || 0; const inches = parseFloat(document.getElementById('inches').value) || 0; heightValue = conversions.height.ft(feet + inches/12); } else { heightValue = conversions.height[heightUnit]( parseFloat(document.getElementById('height').value) || 0 ); }

const weightKg = conversions.weight[weightUnit](weight);

if (weightKg > 0 && heightValue > 0) { const bmi = weightKg / (heightValue ** 2); displayResult(bmi); } }

// Display Results function displayResult(bmi) { const bmiValue = document.getElementById('bmiValue'); const interpretation = document.getElementById('interpretation');

bmiValue.textContent = bmi.toFixed(1);

let category = ''; if (bmi Height (ft & in)

`; } else { document.getElementById('heightInputs').innerHTML = ` `; }

// Add event listeners to new inputs document.querySelectorAll('#heightInputs input').forEach(input => { input.addEventListener('input', calculateBMI); }); });

// Initialize event listeners document.querySelectorAll('input, select').forEach(element => { element.addEventListener('input', calculateBMI); });



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