USD – US Dollar
GBP – Pound Sterling
JPY – Japanese Yen
CHF – Swiss Franc
CAD – Canadian Dollar
AUD – Australian Dollar
CNY – Chinese Yuan Renminbi
HKD – Hong Kong Dollar
NZD – New Zealand Dollar
SGD – Singapore Dollar
Converted Amount:
Note: The European Central Bank (ECB) publishes reference rates daily around 16:00 CET. Please input the specific daily rate you wish to use for calculation.
The European Central Bank (ECB) publishes daily euro foreign exchange reference rates. These rates are widely used by companies, tax authorities, and financial institutions across Europe and the world for financial reporting, annual accounts, and tax declarations. Unlike commercial bank rates which include a spread (profit margin), ECB rates are mid-market "reference" rates intended for information purposes.
How to Use This Calculator
This tool allows you to convert amounts based on specific ECB reference rates. Since ECB rates fluctuate daily, you can manually adjust the "ECB Reference Rate" field to match the specific date you are calculating for (e.g., the rate on the date of a transaction invoice).
Amount: The numerical value you wish to convert.
Conversion Direction: Choose whether you are converting from Euros (EUR) to another currency, or converting a foreign currency back into Euros.
Target Currency: Select the currency associated with the Euro for this calculation.
ECB Reference Rate: The rate published by the ECB for 1 Euro against the target currency. The calculator pre-fills an estimated recent rate, but you should update this for historical accuracy.
Calculation Formula
The ECB always quotes rates as "1 Euro = X Foreign Currency". Therefore, the math changes based on your direction:
1. Converting EUR to Foreign Currency: Formula: Amount (EUR) × Exchange Rate = Result (Foreign)
Example: 1,000 EUR to USD at a rate of 1.10 = 1,100 USD.
2. Converting Foreign Currency to EUR: Formula: Amount (Foreign) ÷ Exchange Rate = Result (EUR)
Example: 1,000 USD to EUR at a rate of 1.10 = 909.09 EUR.
Why Use ECB Rates?
ECB rates are standardized. If you are a business owner in the Eurozone issuing an invoice in USD, your local tax authority likely requires you to record that transaction in EUR using the official ECB rate of that day, rather than the rate your bank might offer you for an immediate spot exchange.
// Sample rates object for auto-filling (Estimates for UX)
var ecbRates = {
"USD": 1.0850,
"GBP": 0.8550,
"JPY": 161.50,
"CHF": 0.9750,
"CAD": 1.4820,
"AUD": 1.6350,
"CNY": 7.8500,
"HKD": 8.4800,
"NZD": 1.7900,
"SGD": 1.4650
};
// Initialize the rate input on load
window.onload = function() {
updateEcbRateHint();
};
function validateEcbInput() {
var amt = document.getElementById('ecb_amount').value;
if (amt < 0) {
document.getElementById('ecb_amount').value = 0;
}
}
function updateEcbRateHint() {
var currency = document.getElementById('ecb_currency').value;
var rateInput = document.getElementById('ecb_rate');
// Update the value to a default estimate if available
if (ecbRates[currency]) {
rateInput.value = ecbRates[currency];
} else {
rateInput.value = "";
}
}
function updateEcbLabels() {
// This function exists if we want to change labels dynamically based on direction,
// currently handled by generic logic but good for extensibility.
}
function calculateEcbExchange() {
// Get Inputs
var amountStr = document.getElementById('ecb_amount').value;
var rateStr = document.getElementById('ecb_rate').value;
var direction = document.getElementById('ecb_direction').value;
var currency = document.getElementById('ecb_currency').value;
// Parse Numbers
var amount = parseFloat(amountStr);
var rate = parseFloat(rateStr);
// Validation
if (isNaN(amount) || isNaN(rate) || amount <= 0 || rate USD: Multiply
convertedAmount = amount * rate;
outputSymbol = currency;
baseSymbol = "EUR";
calculationDetails = amount.toLocaleString() + " EUR × " + rate + " = " + convertedAmount.toFixed(2) + " " + currency;
} else {
// USD -> EUR: Divide
convertedAmount = amount / rate;
outputSymbol = "EUR";
baseSymbol = currency;
calculationDetails = amount.toLocaleString() + " " + currency + " ÷ " + rate + " = " + convertedAmount.toFixed(2) + " EUR";
}
// Display Results
var resultDiv = document.getElementById('ecb_result');
var valueDiv = document.getElementById('ecb_final_value');
var detailDiv = document.getElementById('ecb_exchange_detail');
// Format logic for JPY (0 decimals usually) vs others (2 decimals)
var decimals = (currency === 'JPY' && direction === 'eur_to_foreign') ? 0 : 2;
// If converting TO Euro, standard 2 decimals
if (direction === 'foreign_to_eur') decimals = 2;
valueDiv.innerHTML = convertedAmount.toLocaleString(undefined, {minimumFractionDigits: decimals, maximumFractionDigits: decimals}) + " " + outputSymbol;
detailDiv.innerHTML = calculationDetails;
resultDiv.style.display = "block";
}