About Currency Exchange Calculator

Calculate currency exchanges and conversion rates for travel. Part of the DevTools Surf developer suite. Browse more tools in the Travel collection.

Use Cases

• Calculate travel money needs and compare exchange options before a trip
• Determine the net amount to request when invoicing international clients
• Estimate the cost of converting international revenue to your home currency
• Compare ATM withdrawal vs credit card foreign transaction for travel spending

Tips

• Select 'travel mode' to compute the net amount received after typical airport exchange and ATM withdrawal fees — not just the mid-market conversion
• The round-trip cost calculator shows the total cost to convert to a foreign currency and back — important for recurring international transactions
• Enter the exchange rate manually if you have a quote from your bank, then compare it to the mid-market rate to see the implied markup

Fun Facts

• Airport currency exchange booths are typically the worst-value option for travelers, often charging 10-15% above mid-market rates. ATM withdrawals from local ATMs using your debit card are usually the best option, with markups of 1-3%.
• The Swiss franc (CHF) became famous for its volatility on January 15, 2015, when the Swiss National Bank unexpectedly removed its EUR/CHF peg. The franc appreciated 30% against the euro in minutes — one of the largest intraday currency moves in modern history.
• Some currencies are non-deliverable: you cannot physically exchange them outside the issuing country. The Chinese yuan (CNY offshore is CNH) and Indian rupee are examples. They can only be converted in approved markets.

FAQ

Should I pay in local currency or home currency when using a card abroad?

Always choose local currency (decline the DCC offer to pay in your home currency). Dynamic Currency Conversion (DCC) lets the merchant's terminal convert the charge — typically at rates 3-8% worse than your bank's rate.

What is a foreign transaction fee?

A fee charged by your credit card issuer (typically 1-3%) on purchases in foreign currencies. Travel credit cards often waive this fee. Check your card's terms before traveling internationally.

Why do exchange rates differ between buy and sell?

The spread (difference between buy and sell rates) is how currency exchange providers profit. You buy foreign currency at the higher 'ask' rate and sell at the lower 'bid' rate. The spread varies from 0.1% for major pairs at large banks to 10%+ at tourist kiosks.