Currency Converter

An exchange rate is the price of one currency expressed in terms of another. The mid-market rate (also called the interbank rate) is the mathematical midpoint between the buy and sell prices in the wholesale currency market. It is the rate you see on Google Finance or financial data terminals — and the rate used by this converter.

Retail exchange services (banks, airport kiosks, money transfer apps) charge a spread on top of the mid-market rate. A typical bank charges 2–5% above mid-market. Specialist services like Wise (formerly TransferWise) typically charge 0.3–1.5%. Comparing providers using the mid-market rate as a benchmark is the most effective way to find the best deal for international money transfers.

Exchange rates are primarily driven by interest rate differentials between countries. When a central bank raises interest rates, its currency typically appreciates as capital flows in seeking higher yields — this is the basis of the carry trade strategy. Inflation differentials, trade balances, GDP growth, and political stability also influence exchange rates over medium and long time horizons.

The foreign exchange market is the largest and most liquid financial market in the world, with average daily trading volume exceeding $7.5 trillion (Bank for International Settlements, 2022 Triennial Survey). Currencies are always quoted in pairs. The first currency in the pair is called the base currency and the second is the quote currency. A rate of EUR/USD 1.08 means one euro buys 1.08 US dollars. The base currency is always equal to one unit.

Major currency pairs involve the US dollar on one side and are the most traded pairs in the world. They have the tightest spreads and the highest liquidity, making them the most efficient market for currency exchange. The seven major pairs account for approximately 75% of total daily forex volume.

Exchange rates are determined by the interaction of supply and demand in the foreign exchange market. Multiple macroeconomic and political factors influence this supply-demand balance over different time horizons. Understanding these drivers is essential for anyone managing currency risk — whether a business with international revenue, an investor with foreign assets, or an individual planning an international transfer.

1. Interest Rate Differentials

The single most important driver of exchange rates in the medium term is the differential in interest rates between countries. When a central bank raises its benchmark rate, it makes assets denominated in that currency more attractive to global investors seeking higher yields. Capital flows into the higher-yielding currency, increasing demand and causing appreciation. This mechanism is formalized in the Uncovered Interest Rate Parity (UIP) theory, which predicts that exchange rate changes should offset interest rate differentials over time — though in practice, the carry trade strategy exploits the fact that UIP often does not hold in the short term.

The Federal Reserve's rate-hiking cycle in 2022–2023 provides a clear example: as the Fed raised rates aggressively from 0.25% to 5.5%, the US Dollar Index (DXY) rose by approximately 15% in 12 months, as capital globally rotated into USD-denominated assets. EUR/USD fell from 1.14 to below 0.96 at its trough — a 40-year low — before recovering as the ECB also raised rates.

2. Inflation Differentials and Purchasing Power Parity

Over long time horizons, exchange rates tend to adjust to reflect differences in inflation rates between countries. This is the principle of Purchasing Power Parity (PPP): in theory, a basket of goods should cost the same in two countries when prices are expressed in the same currency. If a country has persistently higher inflation than its trading partners, its currency should depreciate over time to maintain competitiveness.

The Big Mac Index, published by The Economist, is a famous (and deliberately simplified) illustration of PPP: it compares the price of a McDonald's Big Mac in local currency across countries to estimate whether currencies are over- or under-valued relative to the USD. More rigorous PPP measures from the OECD and World Bank use broader consumption baskets. PPP exchange rates are widely used to compare GDP and living standards across countries, but they are poor predictors of short-term exchange rate movements, which are dominated by financial flows rather than goods trade.

3. Current Account and Trade Balance

A country's current account balance — primarily its trade balance (exports minus imports) — influences long-term exchange rate trends. A persistent current account surplus (more exports than imports) means the country's currency is in demand from foreign buyers paying for its goods. A deficit implies the opposite: the country is selling more of its currency to buy foreign goods. Germany's trade surplus has been a structural support for the euro; the US trade deficit has been a persistent headwind for the dollar, though offset by the dollar's reserve currency status.

4. Political Risk and Safe-Haven Flows

Political instability, elections, referenda, and geopolitical shocks cause rapid exchange rate movements as investors reassess a country's risk profile. The Brexit referendum in June 2016 caused GBP/USD to fall nearly 10% in a single trading session — one of the largest single-day moves in a major currency in modern history. Similarly, the 2022 Russian invasion of Ukraine caused the Russian ruble to lose half its value within days (before capital controls and commodity revenues partially reversed the move).

Safe-haven currencies — the US dollar, Swiss franc (CHF), and Japanese yen (JPY) — tend to appreciate during global risk-off episodes as investors seek capital preservation over yield. The Swiss franc and Japanese yen in particular benefit from their countries' large external asset positions and historically low inflation, making them reliable stores of value during crises.

5. Central Bank Interventions

Central banks sometimes intervene directly in currency markets by buying or selling their own currency to influence the exchange rate. Japan's Ministry of Finance and Bank of Japan have historically been the most active interveners among developed economies, periodically selling yen reserves to prevent excessive yen appreciation that could harm Japan's export-oriented economy. In 2022, the BOJ intervened to buy yen when USD/JPY exceeded 150, a level seen as threatening economic stability. Such interventions can produce sharp short-term reversals but are generally considered insufficient to permanently alter currency trends driven by fundamental factors.

Currency quotes follow a standardized format: BASE/QUOTE = rate. For example, EUR/USD = 1.0850 means 1 euro equals 1.0850 US dollars. To convert euros to dollars, multiply by the rate. To convert dollars back to euros, divide by the rate (or multiply by the inverse: 1/1.0850 = 0.9217).

In professional forex markets, rates are quoted to four or five decimal places. The smallest standard price increment is called a pip (percentage in point) — for most pairs, one pip equals 0.0001. For JPY pairs, one pip equals 0.01 because yen is quoted to two decimal places. Retail brokers often display a fifth decimal place, called a pipette or fractional pip.

The bid price is what the market will pay to buy the base currency (what you receive when selling). The ask price is what the market charges to sell the base currency (what you pay when buying). The difference is the bid-ask spreadand represents the market maker's profit. This converter shows the mid-market rate, which is the midpoint between bid and ask.

The mid-market rate shown in this converter is a reference rate — the theoretical midpoint of the market. When you actually exchange currency or send an international transfer, the rate you receive will be different, and sometimes substantially so. The gap between the mid-market rate and what you actually receive is called the markup or spread.

Understanding historic currency crises provides crucial context for how exchange rates can behave in stress scenarios — and why central bank credibility matters so much to currency stability.

1992: Black Wednesday and the ERM Crisis

The European Exchange Rate Mechanism (ERM) required member countries to keep their currencies within agreed bands against the German Deutsche Mark. In September 1992, speculative pressure — led by George Soros and Quantum Fund — bet that the British pound was overvalued within the ERM. Despite the Bank of England raising interest rates to 15% and spending $27 billion in reserves to defend the pound, the UK was forced to withdraw from the ERM on September 16, 1992. GBP/DEM fell approximately 15% on that single day. Soros reportedly made $1 billion from the trade. The event demonstrated that even major central banks with large reserves cannot indefinitely defend a currency peg if it is fundamentally misaligned with economic realities.

1997–1998: Asian Financial Crisis

Multiple Southeast Asian currencies — the Thai baht, Indonesian rupiah, South Korean won, Malaysian ringgit, and Philippine peso — had been pegged or quasi-pegged to the US dollar. When speculative attacks began in Thailand in July 1997, the baht was floated and immediately fell 15%. Contagion spread rapidly across the region. The Indonesian rupiah lost approximately 80% of its value against the dollar at the crisis trough. The International Monetary Fund provided emergency lending facilities totaling over $100 billion across the affected countries in exchange for macroeconomic adjustment programs. The crisis exposed the dangers of maintaining currency pegs funded by short-term foreign capital inflows, and prompted many Asian economies to build large foreign exchange reserve buffers that persist to this day.

2015: Swiss National Bank Removes EUR/CHF Floor

In September 2011, the Swiss National Bank (SNB) established a floor of 1.20 for EUR/CHF, committing to unlimited intervention to prevent further franc appreciation that was harming Swiss exporters. For over three years, the SNB successfully defended the floor. On January 15, 2015, the SNB abruptly and without warning removed the floor. EUR/CHF collapsed from 1.20 to below 0.86 within minutes — a move of more than 30% in one of the world's most liquid currency pairs. Several forex brokers went bankrupt from the overnight gap. The event is often cited as evidence of the extreme tail risk in FX markets and the systemic danger of assuming central bank pegs are permanent.

2022: Turkish Lira and Argentine Peso Hyperinflation Dynamics

Both the Turkish lira and Argentine peso experienced severe depreciation driven by high domestic inflation and unorthodox monetary policy. Turkey's lira fell from approximately 8 USD/TRY at the start of 2021 to over 30 by end-2023, largely because Turkish President Erdoğan insisted on cutting interest rates despite soaring inflation (a policy contrary to standard monetary theory). Argentina's peso has undergone repeated devaluations as the country has struggled with chronic fiscal deficits, high debt, and recurring currency crises since its 2001 default. These cases illustrate that for emerging market currencies, political interference with central bank independence and fiscal profligacy are the primary risk factors for sharp devaluation.

The carry trade is one of the most widely documented currency strategies. It involves borrowing in a low-interest-rate currency (the funding currency) and investing the proceeds in a high-interest-rate currency (the target currency), pocketing the interest rate differential as profit. The Japanese yen, with near-zero interest rates for decades, has been the most common funding currency. Target currencies have historically included the Australian dollar, New Zealand dollar, and various emerging market currencies with higher yields.

The carry trade works well during periods of low volatility and stable risk appetite. However, it is subject to sudden and severe reversals. When global risk sentiment deteriorates — a financial crisis, a sudden recession signal, or a geopolitical shock — carry traders rapidly unwind positions, selling high-yield currencies and buying back funding currencies. This creates a carry trade unwind: JPY and CHF surge while commodity and EM currencies plummet. The 2008 financial crisis and the 2020 COVID shock both triggered massive carry unwinds. The strategy is sometimes described as "picking up nickels in front of a steamroller" — small steady gains interrupted by rare but catastrophic losses.

For ordinary individuals, the carry trade concept is relevant in a more modest sense: holding savings in a high-yield currency exposes you to interest income but also to exchange rate risk. A traveler or expatriate keeping savings in a high-yield emerging market currency may earn 6-8% interest but could easily lose 15-20% from currency depreciation, resulting in a net loss in home-currency terms. Understanding carry dynamics helps explain why simply chasing the highest savings rate across currencies is not a risk-free strategy.

Purchasing Power Parity (PPP) exchange rates answer a different question than market exchange rates: not "how many dollars does one euro buy?" but rather "how much does it cost to live in each country?" The World Bank and OECD publish PPP conversion factors that reflect the relative cost of a standard basket of goods and services across countries.

For example, at the market exchange rate of roughly $1 = €0.92, the US and eurozone appear to have similar price levels. But when you travel from New York to, say, Lisbon or Madrid, you quickly notice that restaurant meals, public transport, and many services cost significantly less in euros than their PPP-equivalent in the US. This indicates the euro is undervalued on a PPP basis in some eurozone cities (particularly in Southern Europe), making them attractive destinations for US-based travelers and remote workers earning in dollars.

PPP considerations are especially important for digital nomads, expatriates, and anyone earning in one currency and spending in another. A salary of $80,000 USD goes much further in Medellín, Colombia (where effective PPP-adjusted cost of living may be 40–50% of New York) than in London or Zurich, where costs may exceed PPP equivalents. Tools like Numbeo and the Economist's Big Mac Index provide rough but useful PPP reference points for lifestyle planning.

For businesses with international operations, currency risk (also called FX risk or foreign exchange risk) is a material financial concern. There are three primary types: transaction risk (the risk that an already-booked foreign-currency sale or purchase will be worth less when settled), translation risk (the impact on reported earnings when foreign subsidiary financials are translated to the parent company's reporting currency), and economic risk (the broader long-term impact of exchange rate changes on competitive position and future cash flows).

Common hedging instruments include forward contracts (locking in a rate today for settlement at a future date), options (the right but not obligation to exchange at a specified rate), and natural hedges (matching revenue and costs in the same currency to reduce net exposure). Many multinational corporations, including Apple, Toyota, and Nestlé, maintain active FX hedging programs that hedge 40–80% of anticipated foreign currency revenues on a rolling 12-month basis.

For investors with international equity or bond portfolios, currency risk adds a layer of return variability on top of the underlying asset returns. A US investor holding European equities who is unhedged profits when the euro strengthens against the dollar (on top of equity returns) but loses when it weakens. Currency-hedged versions of major international ETFs (e.g., MSCI EAFE hedged variants) are available for investors who want international diversification without the currency volatility overlay. Academic research on whether to hedge currency exposure in international portfolios is mixed — for long-term equity portfolios, currency hedging costs may not be worth it given that currency effects tend to revert over long periods, but for bond portfolios, hedging is more consistently recommended because bond returns are smaller and currency risk represents a larger proportion of total volatility.