.gdp-calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 0 auto;
color: #333;
line-height: 1.6;
}
.gdp-calculator-box {
background: #f8f9fa;
border: 1px solid #e9ecef;
border-radius: 8px;
padding: 30px;
margin-bottom: 40px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.calc-title {
text-align: center;
margin-bottom: 25px;
color: #2c3e50;
font-size: 24px;
font-weight: 700;
}
.input-group {
margin-bottom: 20px;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: #495057;
}
.input-group input {
width: 100%;
padding: 12px;
border: 1px solid #ced4da;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
}
.input-group .hint {
display: block;
font-size: 12px;
color: #6c757d;
margin-top: 5px;
}
.calc-btn {
width: 100%;
padding: 14px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 18px;
font-weight: 600;
cursor: pointer;
transition: background-color 0.2s;
}
.calc-btn:hover {
background-color: #0056b3;
}
.results-area {
margin-top: 25px;
background: white;
padding: 20px;
border-radius: 6px;
border-left: 5px solid #007bff;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 0;
border-bottom: 1px solid #eee;
}
.result-row:last-child {
border-bottom: none;
}
.result-label {
font-weight: 600;
color: #555;
}
.result-value {
font-weight: 700;
font-size: 20px;
color: #2c3e50;
}
.positive-growth {
color: #28a745;
}
.negative-growth {
color: #dc3545;
}
.content-section {
margin-top: 40px;
}
.content-section h2 {
color: #2c3e50;
margin-top: 30px;
font-size: 22px;
}
.content-section h3 {
color: #495057;
font-size: 18px;
margin-top: 20px;
}
.content-section p {
margin-bottom: 15px;
}
.formula-box {
background: #eef2f7;
padding: 15px;
border-radius: 4px;
font-family: monospace;
text-align: center;
font-size: 18px;
margin: 20px 0;
border: 1px solid #dee2e6;
}
@media (max-width: 600px) {
.gdp-calculator-box {
padding: 20px;
}
}
function calculateGDPGrowth() {
var prevGDPInput = document.getElementById("prevGDP");
var currGDPInput = document.getElementById("currGDP");
var resultsDiv = document.getElementById("gdpResults");
var rateOutput = document.getElementById("growthRateOutput");
var changeOutput = document.getElementById("absoluteChangeOutput");
var statusOutput = document.getElementById("statusOutput");
var prevGDP = parseFloat(prevGDPInput.value);
var currGDP = parseFloat(currGDPInput.value);
// Validation
if (isNaN(prevGDP) || isNaN(currGDP)) {
alert("Please enter valid numerical values for both GDP periods.");
return;
}
if (prevGDP === 0) {
alert("Previous Period GDP cannot be zero, as it makes the growth calculation mathematically undefined.");
return;
}
// Calculation Logic
var absoluteChange = currGDP – prevGDP;
var growthRate = (absoluteChange / prevGDP) * 100;
// Formatting Results
resultsDiv.style.display = "block";
// Format percentage
var sign = growthRate > 0 ? "+" : "";
rateOutput.innerText = sign + growthRate.toFixed(2) + "%";
// Format absolute number
changeOutput.innerText = absoluteChange.toFixed(2);
// Determine status and styling
if (growthRate > 0) {
rateOutput.className = "result-value positive-growth";
statusOutput.innerText = "Expansion";
statusOutput.className = "result-value positive-growth";
} else if (growthRate < 0) {
rateOutput.className = "result-value negative-growth";
statusOutput.innerText = "Contraction";
statusOutput.className = "result-value negative-growth";
} else {
rateOutput.className = "result-value";
statusOutput.innerText = "Stagnation";
statusOutput.className = "result-value";
}
}
GDP Growth Rate Calculator
Enter the GDP value for the starting year or quarter (in billions or trillions).
Enter the GDP value for the current year or quarter.
GDP Growth Rate:
0.00%
Absolute Change:
0
Economic Status:
–
How to Calculate GDP Growth Rate
Gross Domestic Product (GDP) growth rate is a critical economic indicator that measures how fast an economy is growing or shrinking. It compares the economic output of a country (or region) between two distinct periods, usually quarters or years.
The GDP Growth Rate Formula
To calculate the percentage growth rate of GDP, you use the standard percentage change formula used in mathematics and finance:
Growth Rate = ((Current GDP – Previous GDP) / Previous GDP) × 100
Where:
- Current GDP: The GDP value for the most recent time period (e.g., 2023).
- Previous GDP: The GDP value for the baseline time period (e.g., 2022).
Step-by-Step Calculation Example
Imagine a country had a GDP of $20.5 trillion last year and a GDP of $21.2 trillion this year. Here is how you would calculate the growth rate:
- Find the difference: 21.2 – 20.5 = 0.7
- Divide by previous year: 0.7 / 20.5 = 0.03414…
- Convert to percentage: 0.03414 × 100 = 3.41%
In this example, the economy grew by 3.41%.
Real vs. Nominal GDP
When calculating GDP growth manually, it is essential to know which type of GDP you are using:
- Nominal GDP: Uses current market prices. A high growth rate in nominal GDP might just mean inflation is high, not that the economy is producing more goods.
- Real GDP: Adjusted for inflation. This is the preferred metric for economists because it reflects true economic growth (increase in volume of goods and services) rather than just price increases.
Interpreting the Results
Positive Rate (Expansion): Indicates the economy is producing more value. Rates between 2% and 3% are generally considered healthy for developed economies.
Negative Rate (Contraction): Indicates the economy is shrinking. Two consecutive quarters of negative GDP growth is the technical definition of a recession.