Currency Exchange Rate Calculator
.calculator-container {
font-family: sans-serif;
max-width: 500px;
margin: 20px auto;
padding: 20px;
border: 1px solid #ccc;
border-radius: 8px;
background-color: #f9f9f9;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.calculator-title {
text-align: center;
margin-bottom: 20px;
color: #333;
}
.form-group {
margin-bottom: 15px;
}
.form-group label {
display: block;
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.form-group input[type="number"],
.form-group select {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box; /* Important for consistent sizing */
}
.calculator-button {
width: 100%;
padding: 12px 15px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 16px;
transition: background-color 0.3s ease;
}
.calculator-button:hover {
background-color: #0056b3;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e9ecef;
border: 1px solid #ced4da;
border-radius: 4px;
text-align: center;
font-size: 18px;
color: #495057;
}
function calculateExchangeRate() {
var baseAmount = parseFloat(document.getElementById("baseCurrencyAmount").value);
var baseCurrency = document.getElementById("baseCurrency").value;
var targetCurrency = document.getElementById("targetCurrency").value;
// Basic, hardcoded exchange rates for demonstration.
// In a real application, these would be fetched from an API.
var rates = {
"USD": {
"EUR": 0.92,
"GBP": 0.79,
"JPY": 157.50,
"CAD": 1.37,
"AUD": 1.50,
"CHF": 0.89,
"CNY": 7.24
},
"EUR": {
"USD": 1.09,
"GBP": 0.86,
"JPY": 171.60,
"CAD": 1.49,
"AUD": 1.64,
"CHF": 0.97,
"CNY": 7.89
},
"GBP": {
"USD": 1.27,
"EUR": 1.16,
"JPY": 200.00,
"CAD": 1.74,
"AUD": 1.91,
"CHF": 1.13,
"CNY": 9.20
},
"JPY": {
"USD": 0.0063,
"EUR": 0.0058,
"GBP": 0.0050,
"CAD": 0.0087,
"AUD": 0.0096,
"CHF": 0.0057,
"CNY": 0.046
},
"CAD": {
"USD": 0.73,
"EUR": 0.67,
"GBP": 0.57,
"JPY": 115.00,
"AUD": 1.10,
"CHF": 0.65,
"CNY": 5.30
},
"AUD": {
"USD": 0.67,
"EUR": 0.61,
"GBP": 0.52,
"JPY": 104.50,
"CAD": 0.91,
"CHF": 0.60,
"CNY": 4.83
},
"CHF": {
"USD": 1.12,
"EUR": 1.03,
"GBP": 0.88,
"JPY": 175.00,
"CAD": 1.53,
"AUD": 1.66,
"CNY": 8.10
},
"CNY": {
"USD": 0.14,
"EUR": 0.13,
"GBP": 0.11,
"JPY": 21.60,
"CAD": 0.19,
"AUD": 0.21,
"CHF": 0.12
}
};
var resultElement = document.getElementById("result");
if (isNaN(baseAmount) || baseAmount <= 0) {
resultElement.innerHTML = "Please enter a valid positive amount.";
return;
}
if (baseCurrency === targetCurrency) {
resultElement.innerHTML = "Base and target currencies are the same. No conversion needed.";
return;
}
var exchangeRate = rates[baseCurrency] ? rates[baseCurrency][targetCurrency] : null;
if (exchangeRate === undefined || exchangeRate === null) {
resultElement.innerHTML = "Exchange rate data not available for this pair.";
return;
}
var convertedAmount = baseAmount * exchangeRate;
resultElement.innerHTML =
baseAmount.toFixed(2) + " " + baseCurrency + " is equal to " +
convertedAmount.toFixed(2) + " " + targetCurrency;
}
Understanding Currency Exchange Rates
Currency exchange rates are the value of one nation's currency against another nation's currency. They are fundamental to international trade, travel, and investment. When you exchange one currency for another, you are essentially buying or selling that currency at a specific rate.
How Exchange Rates Work
Exchange rates are determined by supply and demand in the foreign exchange market (Forex). Several factors influence these rates, including:
- Interest Rates: Higher interest rates tend to attract foreign capital, increasing demand for the currency.
- Inflation: High inflation erodes the purchasing power of a currency, generally leading to its depreciation.
- Economic Performance: A strong economy with stable growth typically supports a stronger currency.
- Political Stability: Countries with stable political environments are more attractive to investors, boosting their currency's value.
- Trade Balance: A country with a trade surplus (exports more than it imports) often sees increased demand for its currency.
Using the Currency Exchange Rate Calculator
Our calculator simplifies the process of converting one currency to another. You simply need to:
- Enter the Amount you wish to convert in your Base Currency.
- Select your Base Currency from the dropdown list.
- Select the Target Currency you want to convert to.
- Click the "Calculate Exchange" button.
The calculator will then display the equivalent amount in your chosen target currency, based on current (demonstration) exchange rates. Remember that real-time rates fluctuate constantly.
Example Calculation
Let's say you want to convert 150 USD to EUR.
- Amount in Base Currency: 150
- Base Currency: USD
- Target Currency: EUR
Based on a hypothetical rate of 1 USD = 0.92 EUR, the calculation would be:
150 USD * 0.92 EUR/USD = 138 EUR
So, 150 United States Dollars would be equivalent to 138 Euros.