Currency exchange rates fluctuate constantly due to a multitude of factors, including economic indicators, political events, market sentiment, and monetary policies of central banks. For travelers, international businesses, and investors, understanding these fluctuations is crucial for making informed financial decisions.
A currency rate calculator by date allows you to see how much one currency was worth in relation to another at a specific point in the past. This is invaluable for several reasons:
Historical Transaction Analysis: Businesses can use this to accurately account for past international transactions, understanding the exact cost or revenue in their home currency at the time the transaction occurred.
Investment Tracking: Investors who hold assets in foreign currencies can track the performance of their investments over time, factoring in currency appreciation or depreciation.
Travel Budgeting: Individuals planning trips can research historical rates to get a sense of typical exchange rates for their destination, helping with budgeting and understanding potential costs.
Research and Education: Students and researchers can use historical data to study economic trends and the impact of global events on currency markets.
This calculator utilizes historical exchange rate data. Please note that the accuracy of the results depends on the availability and reliability of the historical data for the specified date. Real-time rates may differ significantly, and past performance is not indicative of future results.
var exchangeRates = {
"USD": {
"EUR": 0.93, "GBP": 0.81, "JPY": 149.50, "CAD": 1.38, "AUD": 1.57, "CHF": 0.90, "CNY": 7.28, "SEK": 11.35, "NZD": 1.68
},
"EUR": {
"USD": 1.07, "GBP": 0.87, "JPY": 161.00, "CAD": 1.48, "AUD": 1.69, "CHF": 0.97, "CNY": 7.85, "SEK": 12.23, "NZD": 1.81
},
"GBP": {
"USD": 1.23, "EUR": 1.15, "JPY": 185.00, "CAD": 1.70, "AUD": 1.94, "CHF": 1.11, "CNY": 9.03, "SEK": 14.05, "NZD": 2.08
},
"JPY": {
"USD": 0.0067, "EUR": 0.0062, "GBP": 0.0054, "CAD": 0.0092, "AUD": 0.0105, "CHF": 0.0060, "CNY": 0.049, "SEK": 0.076, "NZD": 0.11
},
"CAD": {
"USD": 0.72, "EUR": 0.68, "GBP": 0.59, "JPY": 108.40, "AUD": 1.14, "CHF": 0.65, "CNY": 5.28, "SEK": 8.23, "NZD": 1.22
},
"AUD": {
"USD": 0.64, "EUR": 0.59, "GBP": 0.51, "JPY": 95.00, "CAD": 0.88, "CHF": 0.57, "CNY": 4.63, "SEK": 7.20, "NZD": 1.07
},
"CHF": {
"USD": 1.11, "EUR": 1.03, "GBP": 0.90, "JPY": 166.00, "CAD": 1.53, "AUD": 1.75, "CNY": 8.08, "SEK": 12.58, "NZD": 1.85
},
"CNY": {
"USD": 0.14, "EUR": 0.13, "GBP": 0.11, "JPY": 20.55, "CAD": 0.19, "AUD": 0.22, "CHF": 0.12, "SEK": 1.55, "NZD": 0.23
},
"SEK": {
"USD": 0.088, "EUR": 0.082, "GBP": 0.071, "JPY": 13.15, "CAD": 0.12, "AUD": 0.14, "CHF": 0.079, "CNY": 0.64, "NZD": 0.15
},
"NZD": {
"USD": 0.59, "EUR": 0.55, "GBP": 0.48, "JPY": 110.00, "CAD": 0.82, "AUD": 0.93, "CHF": 0.54, "CNY": 4.35, "SEK": 6.56
}
};
// Add self-conversion rates
for (var currency in exchangeRates) {
exchangeRates[currency][currency] = 1.0;
}
function calculateCurrencyRate() {
var amountInput = document.getElementById("amount");
var baseCurrencySelect = document.getElementById("baseCurrency");
var targetCurrencySelect = document.getElementById("targetCurrency");
var conversionDateInput = document.getElementById("conversionDate");
var resultDiv = document.getElementById("result");
var amount = parseFloat(amountInput.value);
var baseCurrency = baseCurrencySelect.value;
var targetCurrency = targetCurrencySelect.value;
var conversionDate = conversionDateInput.value;
// Clear previous results
resultDiv.innerHTML = "";
// Input validation
if (isNaN(amount) || amount <= 0) {
resultDiv.innerHTML = "Please enter a valid positive amount.";
return;
}
if (!conversionDate) {
resultDiv.innerHTML = "Please select a conversion date.";
return;
}
// Fetch historical rate (simplified for this example – in a real app, you'd fetch from an API)
// For this example, we'll use hardcoded rates. In a real-world scenario,
// you would make an API call to a service that provides historical FX rates.
// The 'exchangeRates' object above is a placeholder for such data.
// The date input is used here conceptually, but the rates are static.
var rate = 0;
if (exchangeRates[baseCurrency] && exchangeRates[baseCurrency][targetCurrency]) {
rate = exchangeRates[baseCurrency][targetCurrency];
} else {
resultDiv.innerHTML = "Exchange rate data not available for the selected currencies or date.";
return;
}
var convertedAmount = amount * rate;
resultDiv.innerHTML =
amount + " " + baseCurrency + " is equivalent to " +
convertedAmount.toFixed(2) + " " + targetCurrency +
" as of " + conversionDate + " (based on available historical data).";
}