Currency Converter

How Currency Converter Works

Converted Amount = Amount × Exchange Rate

Rate

Exchange Rate — How many units of the target currency equal 1 unit of the source currency. This rate reflects the relative value between two economies and fluctuates continuously during market hours based on supply and demand in the global foreign exchange market.

ECB

European Central Bank — The authoritative source for reference exchange rates, updated daily at approximately 16:00 CET on banking business days. The ECB reference rates are calculated using a consolidated dataset of electronic trading platform inputs and are used by financial institutions worldwide as benchmark mid-market rates.

Spread

Bid-Ask Spread — The difference between the buy and sell price of a currency pair. Retail currency exchanges make their profit on this spread, which is typically 1-3% for banks, 2-5% for airport exchanges, and as low as 0.1-0.5% for specialized online forex brokers. The rate shown is the mid-market rate with zero spread.

How to Use

1. Enter the amount you want to convert.
2. Select the currency you are converting from.
3. Select the currency you are converting to.
4. The live rate is fetched automatically from the European Central Bank via the Frankfurter API.
5. Keep in mind that the rate shown is the interbank mid-market rate — your actual bank or exchange service will apply a markup (spread) on top of this rate.

Quick Reference

Common Uses

• •Convert between major world currencies using live European Central Bank reference rates for international transactions and travel planning.
• •Compare the mid-market exchange rate against what your bank offers to calculate the hidden cost of currency conversion markups.
• •Plan large international transfers by understanding the true exchange rate before negotiating with forex brokers or banks.

Understanding the Result

Worked Examples

Frequently Asked Questions

Why is the rate I get at the bank different?

Banks and currency exchange services add a markup (called a spread) above the interbank rate. This markup is typically 1–3% at banks and 2–5% at airport exchanges. The rate shown here is the base ECB reference rate with no markup. For large transfers over $5,000, specialized online forex brokers often offer significantly better rates with spreads as low as 0.1-0.5%. Always compare the "all-in" cost including both the spread and any fixed fees before choosing a provider.

How often do exchange rates update?

The European Central Bank updates reference rates on banking business days at approximately 16:00 CET. Rates do not update on weekends or EU public holidays. In the live forex market, however, major currency pairs trade 24 hours a day, five days a week, and rates fluctuate continuously. The ECB reference rate is a snapshot taken at a specific time each day, not a real-time trading rate.

What is the Frankfurter API?

Frankfurter is an open-source foreign exchange rates API that sources its data from the European Central Bank. It provides free, accurate, daily reference rates for 33+ currencies. It is widely used by developers and financial applications because it requires no API key, has no rate limits for reasonable use, and provides historical data going back to 1999 when the euro was introduced.

What factors cause exchange rates to change?

Exchange rates are driven by a complex mix of factors: interest rate differentials between central banks (higher rates attract foreign capital, strengthening the currency), inflation rates (higher inflation typically weakens a currency), trade balances (trade surpluses tend to strengthen a currency), political stability, economic growth rates, and market speculation. Major events like elections, central bank announcements, or geopolitical crises can cause significant intraday movements.

What is the best way to get foreign currency for travel?

The most cost-effective approach is usually a combination: use a no-foreign-transaction-fee credit card for purchases (0% FX fee), withdraw cash from a local ATM at your destination (typically 1-2% above mid-market), and avoid airport kiosks entirely (5-15% markup). Order a small amount of currency from your bank before departure for immediate needs like taxi fares. Never use dynamic currency conversion (DCC) at foreign terminals — always choose to be charged in the local currency.

What is a currency peg and how does it affect exchange rates?

A currency peg is when a country fixes its currency's value to another currency (usually USD) or a basket of currencies. Examples include the Hong Kong dollar (pegged to USD at ~7.75-7.85 HKD/USD), the Saudi riyal (fixed at 3.75 SAR/USD), and the Danish krone (pegged to EUR). Pegged currencies do not float freely — their central bank intervenes to maintain the peg by buying or selling foreign reserves. When using this calculator with a pegged currency, the rate will be very stable (the peg range), unlike freely floating currencies whose rates change continuously.

Why do some currencies have very high or very low nominal values relative to USD?

A currency's nominal value (e.g., 1 USD = 145 JPY vs 1 USD = 0.92 EUR) does not indicate economic strength — it is largely a historical artifact. Japan has never redenominated the yen, which is why one yen is a very small unit. South Korea's won, Indonesia's rupiah, and Vietnam's dong similarly have high nominal values relative to USD. What matters for economic analysis is not the nominal exchange rate but the Real Effective Exchange Rate (REER), which adjusts for inflation and trade weights across multiple trading partners. A currency with a low nominal value can still represent a strong, productive economy.

Pro Tips

• →Always check the mid-market rate before converting — this is the "real" rate without any markup. Google the pair (e.g., "USD to EUR") to see it instantly.
• →Avoid airport and hotel currency exchange kiosks — they typically offer the worst rates with spreads of 5-15%. Use a local ATM instead for better rates.
• →For large transfers (over $1,000), use a specialized currency transfer service rather than your bank — the savings from a better exchange rate can be 2-4%.
• →Consider a multi-currency account or card if you travel frequently — they let you hold and spend multiple currencies at near-interbank rates.
• →Be aware of the "dynamic currency conversion" scam at foreign ATMs and card terminals — always choose to be charged in the local currency, not your home currency.
• →Weekend and holiday exchange rates may include additional markup since forex markets are closed — convert during business days for the best rates.

Limitations to Know

• •Exchange rates shown are mid-market reference rates and may differ from rates offered by banks, credit cards, or currency exchange services which add their own spread.
• •This calculator does not account for transaction fees, service charges, or commission that financial institutions typically add to currency conversions.
• •Rates update periodically based on available data and may not reflect real-time market movements during periods of high volatility.
• •When not to use: This tool provides estimates for personal finance and travel planning — it should not be used for forex trading, business accounting requiring exact rates, or legal currency conversion requirements.

Sources

• Federal Reserve
• Investopedia
• European Central Bank