Convert currencies based on European Central Bank euro reference rates logic.
EUR – Euro
USD – US Dollar
JPY – Japanese Yen
BGN – Bulgarian Lev
CZK – Czech Koruna
DKK – Danish Krone
GBP – Pound Sterling
HUF – Hungarian Forint
PLN – Polish Zloty
RON – Romanian Leu
SEK – Swedish Krona
CHF – Swiss Franc
ISK – Icelandic Krona
NOK – Norwegian Krone
TRY – Turkish Lira
AUD – Australian Dollar
BRL – Brazilian Real
CAD – Canadian Dollar
CNY – Chinese Yuan Renminbi
HKD – Hong Kong Dollar
IDR – Indonesian Rupiah
ILS – Israeli Shekel
INR – Indian Rupee
KRW – South Korean Won
MXN – Mexican Peso
MYR – Malaysian Ringgit
NZD – New Zealand Dollar
PHP – Philippine Peso
SGD – Singapore Dollar
THB – Thai Baht
ZAR – South African Rand
EUR – Euro
USD – US Dollar
JPY – Japanese Yen
BGN – Bulgarian Lev
CZK – Czech Koruna
DKK – Danish Krone
GBP – Pound Sterling
HUF – Hungarian Forint
PLN – Polish Zloty
RON – Romanian Leu
SEK – Swedish Krona
CHF – Swiss Franc
ISK – Icelandic Krona
NOK – Norwegian Krone
TRY – Turkish Lira
AUD – Australian Dollar
BRL – Brazilian Real
CAD – Canadian Dollar
CNY – Chinese Yuan Renminbi
HKD – Hong Kong Dollar
IDR – Indonesian Rupiah
ILS – Israeli Shekel
INR – Indian Rupee
KRW – South Korean Won
MXN – Mexican Peso
MYR – Malaysian Ringgit
NZD – New Zealand Dollar
PHP – Philippine Peso
SGD – Singapore Dollar
THB – Thai Baht
ZAR – South African Rand
Note: This calculator uses static reference rates (approximate market values) for demonstration. For official financial reporting, always verify the specific day's rate published at 16:00 CET on the ECB website.
Understanding ECB Exchange Rates
The European Central Bank (ECB) publishes euro foreign exchange reference rates daily around 16:00 CET. These rates are distinct from live market rates provided by commercial banks or forex trading platforms. The ECB reference rates are intended purely for information purposes and are widely used for corporate financial reporting, tax declarations, and statistical analysis across the Eurozone and beyond.
How the ECB Calculation Logic Works
All ECB reference rates are quoted against the Euro (EUR). This means the ECB does not directly publish a rate for USD to GBP (US Dollar to British Pound). Instead, it publishes 1 EUR = X USD and 1 EUR = Y GBP. To perform a conversion between two non-Euro currencies using ECB data, a cross-calculation is required:
Step 1: Convert the source currency amount to Euro.
Step 2: Convert the resulting Euro amount to the target currency.
For example, to convert USD to JPY, you divide the USD amount by the EUR/USD rate to get Euros, and then multiply by the EUR/JPY rate to get Yen. This ensures consistency across all financial documentation that relies on the "Euro Foreign Exchange Reference Rates."
Why Use ECB Rates?
Companies operating within the EU often use these specific rates for annual accounts and VAT reporting because they provide a standardized, neutral benchmark. While live market rates fluctuate every millisecond, the ECB rate provides a single "snapshot" of the market liquidity at a specific time of day, making it easier to audit and verify historical transactions.
Key Features of ECB Reference Rates
Update Time: Daily around 16:00 Central European Time (CET).
Currency Base: Always quoted as 1 Euro = X Foreign Currency.
Stability: Acts as a reliable daily anchor for accounting software and ERP systems.
function calculateECBConversion() {
// Approximate recent reference rates relative to 1 EUR
// These are static examples for the calculation logic.
var rates = {
"EUR": 1.0,
"USD": 1.08, // US Dollar
"JPY": 163.50, // Japanese Yen
"BGN": 1.9558, // Bulgarian Lev
"CZK": 25.30, // Czech Koruna
"DKK": 7.46, // Danish Krone
"GBP": 0.855, // Pound Sterling
"HUF": 395.00, // Hungarian Forint
"PLN": 4.30, // Polish Zloty
"RON": 4.97, // Romanian Leu
"SEK": 11.25, // Swedish Krona
"CHF": 0.96, // Swiss Franc
"ISK": 150.0, // Icelandic Krona
"NOK": 11.45, // Norwegian Krone
"TRY": 34.50, // Turkish Lira
"AUD": 1.65, // Australian Dollar
"BRL": 5.40, // Brazilian Real
"CAD": 1.47, // Canadian Dollar
"CNY": 7.85, // Chinese Yuan
"HKD": 8.45, // Hong Kong Dollar
"IDR": 17000, // Indonesian Rupiah
"ILS": 4.05, // Israeli Shekel
"INR": 90.50, // Indian Rupee
"KRW": 1450, // South Korean Won
"MXN": 18.20, // Mexican Peso
"MYR": 5.15, // Malaysian Ringgit
"NZD": 1.78, // New Zealand Dollar
"PHP": 61.50, // Philippine Peso
"SGD": 1.46, // Singapore Dollar
"THB": 39.50, // Thai Baht
"ZAR": 20.50 // South African Rand
};
// 1. Get Inputs
var amountInput = document.getElementById("ecbAmount").value;
var sourceCurrency = document.getElementById("sourceCurrency").value;
var targetCurrency = document.getElementById("targetCurrency").value;
var amount = parseFloat(amountInput);
// 2. Validate Inputs
if (isNaN(amount) || amount <= 0) {
alert("Please enter a valid positive amount.");
return;
}
// 3. Get Rates relative to EUR
var sourceRateToEur = rates[sourceCurrency]; // e.g. USD is 1.08
var targetRateToEur = rates[targetCurrency]; // e.g. GBP is 0.85
// 4. Perform Calculation Logic (Cross Rate via EUR)
// Formula: TargetAmount = SourceAmount * (TargetRate / SourceRate)
// Explanation: Convert Source to EUR (Divide by SourceRate), then EUR to Target (Multiply by TargetRate)
var amountInEur = amount / sourceRateToEur;
var finalAmount = amountInEur * targetRateToEur;
// Calculate the implied cross rate
var impliedRate = targetRateToEur / sourceRateToEur;
// 5. Display Results
var resultBox = document.getElementById("ecbResult");
var baseCalcDiv = document.getElementById("baseCalculation");
var crossRateDiv = document.getElementById("crossRateInfo");
var finalDiv = document.getElementById("finalResult");
resultBox.style.display = "block";
// Formatting numbers
var displayAmountInEur = amountInEur.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
var displayFinalAmount = finalAmount.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
var displayImpliedRate = impliedRate.toFixed(4);
// Logic explanation string
var logicString = "";
if (sourceCurrency === "EUR") {
logicString = "Direct conversion from Euro base.";
} else if (targetCurrency === "EUR") {
logicString = "Direct conversion to Euro base.";
} else {
logicString = "Cross-calculation via EUR: " + amount + " " + sourceCurrency + " = " + displayAmountInEur + " EUR";
}
baseCalcDiv.innerHTML = logicString;
crossRateDiv.innerHTML = "Implied Exchange Rate: 1 " + sourceCurrency + " = " + displayImpliedRate + " " + targetCurrency;
finalDiv.innerHTML = displayFinalAmount + " " + targetCurrency;
}