A cross exchange rate is the exchange rate between two currencies that are not the US Dollar (USD) or Euro (EUR), which are considered the two major global currencies.
For example, if you want to know the exchange rate between the Australian Dollar (AUD) and the Canadian Dollar (CAD), you would typically use a cross rate.
These are often derived indirectly. If you know the AUD to USD rate and the CAD to USD rate, you can calculate the AUD to CAD rate.
The formula generally involves using a common third currency, often the USD.
If you have Rate A (Currency1/USD) and Rate B (Currency2/USD), then:
Currency1/Currency2 = (Currency1/USD) / (Currency2/USD)
Or, if you have Rate A (USD/Currency1) and Rate B (USD/Currency2), then:
Currency1/Currency2 = (USD/Currency2) / (USD/Currency1)
This calculator assumes you are given rates against a common currency (like USD, EUR, etc.).
function calculateCrossRate() {
var rate1Input = document.getElementById("rate1");
var rate2Input = document.getElementById("rate2");
var currency1SymbolInput = document.getElementById("currency1_symbol");
var currency2SymbolInput = document.getElementById("currency2_symbol");
var resultDiv = document.getElementById("result");
var rate1 = parseFloat(rate1Input.value);
var rate2 = parseFloat(rate2Input.value);
var currency1Symbol = currency1SymbolInput.value.trim();
var currency2Symbol = currency2SymbolInput.value.trim();
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(rate1) || isNaN(rate2)) {
resultDiv.innerHTML = "Please enter valid numbers for both rates.";
return;
}
if (rate2 === 0) {
resultDiv.innerHTML = "The rate for Currency 2 cannot be zero.";
return;
}
if (currency1Symbol === "" || currency2Symbol === "") {
resultDiv.innerHTML = "Please enter symbols for both currencies.";
return;
}
var crossRate = rate1 / rate2; // Assumes both rates are against the same common currency (e.g., X/USD)
resultDiv.innerHTML = "