How Do Currency Exchange Rates Work?
A currency exchange rate is the price at which one currency can be exchanged for another. Exchange rates fluctuate continuously during trading hours as currencies are bought and sold on the global foreign exchange (forex) market — the largest financial market in the world, with daily trading volumes exceeding $7.5 trillion. Rates are influenced by a complex interplay of factors including interest rate differentials between countries, inflation rates, economic growth data, political stability, and market sentiment.
The rates shown in this converter are mid-market rates — the midpoint between the buy and sell prices used by banks and currency brokers. When you exchange currency at a bank, bureau de change, or airport kiosk, you will typically receive a less favourable rate, as the provider adds a margin (spread) to make a profit. Online currency exchange services and specialist brokers generally offer rates much closer to the mid-market rate.
The British Pound and Major Currency Pairs
The British pound sterling (GBP) is one of the world's oldest and most traded currencies. The GBP/USD pair (colloquially known as "cable," a term dating to the transatlantic telegraph cable of the 1860s) is one of the most actively traded currency pairs globally. The pound's value against the US dollar and euro is closely watched as an indicator of UK economic health and political stability.
Since Brexit, the pound has experienced increased volatility against the euro, as the UK's trading relationship with its largest partner changed significantly. The Bank of England's interest rate decisions are among the most important drivers of sterling's value — higher interest rates tend to attract foreign investment, increasing demand for the pound and pushing its value up.
Getting the Best Exchange Rate
For travellers and businesses exchanging currency, the difference between a good and a poor exchange rate can be significant. Here are the key principles for getting the best rate:
Avoid airport bureaux de change — they typically offer the worst rates and highest fees, capitalising on travellers who have no alternative. Banks offer better rates but often charge fixed transaction fees that make small exchanges expensive. Specialist online currency brokers (such as Wise, Revolut, or OFX) typically offer rates within 0.5–1% of the mid-market rate, making them the best option for larger transfers. For everyday spending abroad, a travel credit card with no foreign transaction fees (such as those from Halifax, Barclaycard, or Chase UK) will apply the Visa or Mastercard exchange rate, which is very close to the mid-market rate.
Important Disclaimer
The exchange rates shown in this converter are for informational purposes only. They are sourced from the open exchange rate API and are updated daily, but they represent mid-market rates and may differ from the rates offered by your bank, broker, or currency exchange provider. For large transactions or business use, always obtain a formal quote from a regulated currency exchange provider. Calculators Now accepts no responsibility for financial decisions made based on the rates displayed here.