Currency Exchange - Live Exchange Rates
for 150+ World Currencies

The Ultimate Guide to Foreign Exchange Rates and Currency Conversion

Everything you need to know before converting money - whether for travel, investment, or business.

What exactly is a foreign exchange rate? An exchange rate is simply the price of one country's currency expressed in terms of another country's currency. When you see "1 USD = 0.92 EUR," that number is the exchange rate. It tells you that one US Dollar can be exchanged for 92 Euro cents at that moment in time. These rates are set by the global Forex market - short for Foreign Exchange market - which is the largest and most liquid financial market on earth, processing over $7 trillion in transactions every single day. Unlike stock markets, Forex operates 24 hours a day, 5 days a week, across financial centres in Tokyo, London, New York, and Sydney.

Why does my bank charge a different rate than what I see here? The rate displayed on this tool (and on sites like Google Finance) is known as the mid-market rate, sometimes called the "interbank rate." This is the theoretical midpoint between the buying and selling price of a currency as traded between large financial institutions. It is the fairest, most accurate benchmark available. However, when you exchange money at a bank, airport kiosk, or currency bureau, they apply a markup on top of this rate - this is how they make a profit. A typical high-street bank might add a 3-7% margin; airport kiosks can add as much as 10-15%. Services like Wise (formerly TransferWise) or Revolut have built their entire business model on offering rates closer to the mid-market rate with transparent, lower fees.

• How often do global exchange rates actually change?

  Major currency pairs like EUR/USD or GBP/USD can change thousands of times per second during active trading hours. Even over the course of a single business day, a rate can fluctuate by 0.5-1% or more based on economic news, geopolitical events, or large institutional trades. During high-impact events - such as a central bank announcing an interest rate decision, a surprise election result, or a major economic crisis - rates can shift dramatically within minutes.

  For the average traveler or international shopper, these day-to-day fluctuations are relatively minor. However, for businesses managing large international payments or investors speculating on currency movements, even a fraction of a percent change is financially significant. The rates shown in this tool are refreshed each time you load the page, giving you the current mid-market rate as of that moment.

• What causes a currency to gain or lose value?

  Currency values are determined by a complex mix of economic, political, and psychological factors. The primary drivers include:

  Interest rates: When a country's central bank (such as the US Federal Reserve or the European Central Bank) raises interest rates, it attracts foreign investment seeking higher returns, which increases demand for that currency and drives its value up. Lowering rates typically has the opposite effect.

  Inflation: Countries with lower, stable inflation rates generally see their currency appreciate over time relative to countries with higher inflation. High inflation erodes the purchasing power of a currency, making it less attractive to hold.

  Economic performance: Strong GDP growth, low unemployment, and a healthy trade balance signal a robust economy, which tends to attract foreign capital and strengthen the currency.

  Political stability: Political uncertainty, conflict, or unstable governance creates risk for foreign investors, who may move their money elsewhere - putting downward pressure on that country's currency. This is why major elections or political crises often cause short-term volatility in exchange rates.

• What is a bid/ask spread, and why does it matter to me as a traveler?

  The bid/ask spread is the hidden cost embedded in almost every currency exchange transaction. Here is a simple example: the mid-market rate for USD to EUR might be 1 USD = 0.920 EUR. But when you go to exchange money, the provider might offer you 1 USD = 0.880 EUR (a lower "sell" rate). The difference - 0.04 EUR per dollar - goes directly to the exchange provider as profit. You never see this as an explicit "fee," which is why it is easy to overlook.

  As a traveler, you can minimize your exposure to poor spreads by: (1) using a bank card that processes transactions at the network exchange rate (Visa/Mastercard rates are close to mid-market), (2) avoiding airport and hotel currency exchange desks which have the widest spreads, (3) using specialist services like Wise, Revolut, or a local ATM withdrawal at your destination rather than pre-ordering cash from a high-street bank.

• Where does the exchange rate data on this tool come from?

  This tool uses the Frankfurter API, a free, open-source foreign exchange rate API built on data published by the European Central Bank (ECB). The ECB publishes official reference rates once per business day, typically around 16:00 CET. These rates represent the mid-market rate for Euro (EUR) against major world currencies, and the Frankfurter service converts them into cross-rates for all other currency pairs.

  Because the ECB rates are updated once daily (on business days only), the rates you see here reflect the most recent official ECB publication. They are not streaming real-time tick-by-tick quotes from Forex trading floors - for that level of data, professional paid services like Bloomberg or Reuters are required. For everyday conversions, travel budgeting, and general reference, the ECB mid-market rates are highly accurate and widely trusted.

• Should I exchange currency before traveling, or wait until I arrive?

  For most travelers, the best strategy is to avoid exchanging cash before you depart unless your destination has limited ATM access or you are traveling to a country with currency controls. Here is why: travel bureaus and banks that offer "pre-trip currency orders" typically apply wide spreads and flat fees, making them an expensive option.

  Instead, consider: (1) withdrawing local currency from an ATM at your destination - ATM networks typically offer near-mid-market rates, though your home bank may charge a foreign transaction fee; (2) using a travel-friendly debit or credit card (Wise, Charles Schwab, or similar) that charges no foreign transaction fees and converts at the interbank rate; (3) if you absolutely need cash in hand before you leave, compare rates at multiple local banks and avoid airport kiosks entirely. Carrying a small amount of the local currency for immediate arrival expenses (transport, tips) is sensible, but the bulk of your spending budget is better accessed digitally.