Total Fertility Rate Calculator
The Total Fertility Rate (TFR) is a synthetic measure representing the average number of children a woman would have if she experienced the current age-specific fertility rates throughout her reproductive life. It's a crucial indicator for understanding population dynamics, future population growth, and societal trends.
Calculate TFR
Total Fertility Rate (TFR):
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function calculateTFR() {
var age0_4_rate = parseFloat(document.getElementById("age0_4_rate").value) || 0;
var age5_9_rate = parseFloat(document.getElementById("age5_9_rate").value) || 0;
var age10_14_rate = parseFloat(document.getElementById("age10_14_rate").value) || 0;
var age15_19_rate = parseFloat(document.getElementById("age15_19_rate").value) || 0;
var age20_24_rate = parseFloat(document.getElementById("age20_24_rate").value) || 0;
var age25_29_rate = parseFloat(document.getElementById("age25_29_rate").value) || 0;
var age30_34_rate = parseFloat(document.getElementById("age30_34_rate").value) || 0;
var age35_39_rate = parseFloat(document.getElementById("age35_39_rate").value) || 0;
var age40_44_rate = parseFloat(document.getElementById("age40_44_rate").value) || 0;
var age45_49_rate = parseFloat(document.getElementById("age45_49_rate").value) || 0;
var totalFertilityRate = (age0_4_rate + age5_9_rate + age10_14_rate + age15_19_rate + age20_24_rate + age25_29_rate + age30_34_rate + age35_39_rate + age40_44_rate + age45_49_rate);
if (isNaN(totalFertilityRate)) {
document.getElementById("result").innerText = "Please enter valid numbers.";
} else {
document.getElementById("result").innerText = totalFertilityRate.toFixed(2);
}
}
.calculator-container {
font-family: Arial, sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 20px;
border: 1px solid #e0e0e0;
border-radius: 8px;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.calculator-container h2 {
text-align: center;
color: #333;
margin-bottom: 15px;
}
.calculator-container p {
text-align: justify;
color: #555;
line-height: 1.6;
margin-bottom: 25px;
}
.input-section {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 20px;
margin-bottom: 20px;
}
.form-group {
display: flex;
flex-direction: column;
}
.form-group label {
margin-bottom: 5px;
font-weight: bold;
color: #444;
}
.form-group input[type="number"] {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1rem;
}
.form-group input[type="number"]:focus {
outline: none;
border-color: #007bff;
box-shadow: 0 0 0 2px rgba(0,123,255,0.25);
}
.form-group small {
font-size: 0.8rem;
color: #777;
margin-top: 5px;
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 1.1rem;
cursor: pointer;
transition: background-color 0.3s ease;
margin-top: 10px;
}
.calculator-container button:hover {
background-color: #0056b3;
}
.result-section {
margin-top: 25px;
text-align: center;
padding: 15px;
background-color: #f8f9fa;
border-radius: 8px;
border: 1px solid #e9ecef;
}
.result-section h3 {
color: #333;
margin-bottom: 10px;
}
#result {
font-size: 1.8rem;
font-weight: bold;
color: #28a745;
}