Check Your Bmi Using The Bbc Calculator

var principal = parseFloat(document.getElementById(\”principal\”).value) || 0;\nvar years = parseFloat(document.getElementById(\”years\”).value) || 0;\nvar rate = parseFloat(document.getElementById(\”rate\”).value) || 0;\n\n// — 2. CALCULATE VALUES —\nvar monthlyRate = rate / 1200;\nvar compound = Math.pow(1 + monthlyRate, years * 12);\nvar payment = (principal * monthlyRate * compound) / (compound – 1);\n\nvar total = payment * years * 12;\nvar saved = total – principal;\n\n// — 3. UPDATE RESULTS (USING EXACT IDs) —\ndocument.getElementById(\”monthlyPaymentResult\”).textContent = \”$\” + payment.toFixed(2);\ndocument.getElementById(\”totalResult\”).textContent = \”$\” + total.toFixed(2);\ndocument.getElementById(\”interestResult\”).textContent = \”$\” + saved.toFixed(2);\n\n// — 4. UPDATE CHART DATA —\nupdateChart(years, saved);\n}\n\n// — CHART FUNCTION (FIXED) —\nfunction updateChart(years, totalInterest) {\n var chartCanvas = document.getElementById(\”interestChart\”);\n if (!chartCanvas) {\n console.error(\”Canvas not found!\”);\n return;\n }\n var ctx = chartCanvas.getContext(\”2d\”);\n\n var labels = [];\n var interestData = [];\n var totalData = [];\n\n var monthlyRate = 0.0041667;\n var currentInterest = 0;\n var currentTotal = principal;\n\n for (var i = 1; i <= years; i++) {\n labels.push(i + \"y\");\n currentInterest += totalInterest * (i / years);\n currentTotal = principal + currentInterest;\n interestData.push(currentInterest);\n totalData.push(currentTotal);\n }\n\n new Chart(ctx, {\n type: \"line\",\n data: {\n labels: labels,\n datasets: [\n {\n label: \"Total Paid\",\n data: totalData,\n borderColor: \"#004a99\",\n borderWidth: 2,\n tension: 0.4,\n pointRadius: 5,\n fill: false\n },\n {\n label: \"Total Interest\",\n data: interestData,\n borderColor: \"#28a745\",\n borderWidth: 2,\n tension: 0.4,\n pointRadius: 5,\n fill: false\n }\n ]\n },\n options: {\n responsive: true,\n maintainAspectRatio: false,\n scales: {\n y: {\n beginAtZero: true,\n ticks: {\n callback: function(value) {\n return \"$\" + value.toLocaleString();\n }\n }\n }\n },\n plugins: {\n legend: {\n position: \"top\"\n },\n title: {\n display: true,\n text: \"Loan Growth Over Time\"\n }\n }\n }\n });\n}\n\n\n

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\n \n \n Your weight in kilograms (kg)\n

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\n \n \n Your height in centimeters (cm)\n

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How BMI is Calculated

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\n The Body Mass Index (BMI) is calculated using a simple formula that\n relates your weight to your height. It provides a quick estimate of\n whether your weight is healthy for your height.\n

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\n Formula:\n BMI = weight (kg) / [height (m)]²\n

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\n For example, a person weighing 70 kg and standing 1.75 m tall would\n have a BMI of 22.9 (70 / 1.75²).\n

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BMI Variables

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Variable	Meaning	Unit	Typical Range
Weight	Body mass	kilograms (kg)	40–150 kg
Height	Body height	centimeters (cm) or meters (m)	140–200 cm
BMI	Body Mass Index	kg/m^2	10–40+

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