Last updated: March 2026
What is a Currency Converter?
A currency converter translates the value of money from one currency into another using current exchange rates. Whether you are planning an international trip, shopping on a foreign website, sending money overseas, or tracking global investments, a currency converter gives you the real-time equivalent of any amount in the currency you need.
Exchange rates are determined by the foreign exchange (forex) market, the largest financial market on Earth. The forex market processes roughly $7.5 trillion in transactions every day — more than 25 times the daily volume of all global stock markets combined. Rates shift constantly based on supply and demand, central bank policies, economic data, and geopolitical events.
How Exchange Rates Work
An exchange rate is simply the price of one currency expressed in terms of another. When you see "1 USD = 0.92 EUR," it means one US Dollar buys 0.92 Euros. The rate you see on this converter is the mid-market rate — the midpoint between buy and sell prices — which is the fairest benchmark available.
Most currencies today use a floating exchange rate system, where the rate is set by market forces. The US Dollar is involved in approximately 88% of all forex transactions, making it the world's dominant reserve currency. The EUR/USD pair is the single most traded currency pair, accounting for roughly 23% of all daily forex volume.
Factors That Affect Currency Exchange Rates
Exchange rates are influenced by a complex web of economic, political, and psychological factors. Interest rates are the single most important driver — when a country's central bank raises rates, its currency tends to strengthen because higher rates attract foreign investment seeking better returns.
Inflation differentials also play a major role. Countries with lower inflation rates typically see their currency appreciate over time because their purchasing power increases relative to trading partners. Trade balances, government debt levels, political stability, and economic growth all contribute to long-term currency trends. In the short term, market sentiment and speculative flows can cause significant volatility.
Tips for Getting the Best Exchange Rate
The rate you receive when exchanging money almost always includes a markup over the mid-market rate. Airport exchange kiosks typically charge 8-12% above mid-market, making them the most expensive option. Banks are better at 2-5%, while specialized online money transfer services like Wise or Revolut often offer markups under 1%.
When traveling, using a credit card with no foreign transaction fees is usually the best strategy for point-of-sale purchases. For larger transfers, compare services using the mid-market rate shown here as your benchmark. Always choose to pay in the local currency rather than your home currency when given the option at a foreign terminal — the dynamic currency conversion markup can be 3-7% on top of an already unfavorable rate.
Frequently Asked Questions
What is a currency converter?
A currency converter is a tool that calculates how much one currency is worth in terms of another. It uses exchange rates — the price of one currency expressed in another — to perform the conversion. Our converter fetches live mid-market rates from a public API and performs the calculation entirely in your browser, with no data sent to our servers.
How often are exchange rates updated?
The exchange rates shown on this page are updated daily from the exchangerate-api.com public API. Rates are cached for 30 minutes in your browser to ensure fast performance. For real-time trading rates with second-by-second precision, you would need a premium forex data feed, but daily rates are accurate enough for travel planning, budgeting, and general reference.
What is the mid-market rate?
The mid-market rate (also called the interbank rate or spot rate) is the midpoint between the buy and sell prices of two currencies on the global market. It is the fairest exchange rate available and is the rate you see on financial news sites and tools like this one. Banks and exchange services typically add a markup (spread) on top of the mid-market rate, which is how they make a profit.
Why is the rate I get at the bank different from this converter?
Banks, airports, and money transfer services add a markup (spread) to the mid-market rate. This spread is their profit margin and can range from 1% for competitive online services to 8-12% at airport kiosks. Always compare the rate you are offered to the mid-market rate shown here to understand how much markup you are paying.
What is the most traded currency in the world?
The US Dollar (USD) is by far the most traded currency, appearing in approximately 88% of all forex transactions. The Euro (EUR) is second at about 31%, followed by the Japanese Yen (JPY) at 17%, and the British Pound (GBP) at 13%. The EUR/USD pair is the single most traded currency pair in the world, accounting for about 23% of all forex volume.
How large is the global forex market?
The foreign exchange (forex) market is the largest financial market in the world. According to the Bank for International Settlements, it processes approximately $7.5 trillion in transactions every single day. That is more than 25 times the daily volume of all global stock markets combined. The market operates 24 hours a day, five days a week, across major financial centers in London, New York, Tokyo, and Sydney.