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For informational purposes only. Not financial advice. Consult a licensed advisor.
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window.calc = function() {
const weight = parseFloat(document.querySelector('[data-key="weight"]').value || '0') || 0;
const heightFt = parseFloat(document.querySelector('[data-key="heightFt"]').value || '0') || 0;
const heightIn = parseFloat(document.querySelector('[data-key="heightIn"]').value || '0') || 0;
const heightM = (heightFt * 0.3048) + (heightIn * 0.0254);
if (weight <= 0 || heightM <= 0) return 'Enter valid weight and height.';
const bmi = weight / (heightM * heightM);
const category = bmi < 18.5 ? 'Underweight' : bmi < 25 ? 'Normal' : bmi < 30 ? 'Overweight' : 'Obese';
return 'BMI: ' + bmi.toFixed(1) + ' | Category: ' + category;
};