Last reviewed on May 1, 2026.
The pair pages on this site answer the immediate question — what is one currency worth in another right now. The articles below cover the background that makes those numbers easier to interpret: how a quote is read, why a bank's rate differs from the reference rate, what the three-letter codes mean, how cards and ATMs price a conversion abroad, and what a short-horizon rate forecast is really worth. Each guide is jurisdiction-neutral and is reviewed periodically.
How currency exchange rates are quoted
Base and quote currencies, direct vs indirect quotes, bid and ask, pips, inverse rates, and why two reputable sites can show slightly different numbers for the same pair.
Mid-market rate vs the rate your bank actually gives you
Where the gap between a reference rate and a real-world consumer rate comes from, how to estimate it as a percentage, and what to compare when shopping around for a money transfer or card.
ISO 4217 currency codes: structure and meaning
How three-letter codes are built, why the euro is an exception, what X-codes are for, and why the same currency symbol — like "$" — can mean a dozen different currencies.
Major, minor, and exotic currency pairs
What separates the three groups, why the categorisation predicts spreads and liquidity, and what it means for the gap between the reference rate on a pair page and what you can actually transact at.
Direct vs indirect exchange rate quotes
Why the same rate can be written two ways, how to tell the base currency from the quote currency, when to multiply and when to divide, and the units check that settles a foreign-currency receivable.
Card and ATM exchange rates abroad
Visa and Mastercard wholesale rates against the mid-market rate, what your issuer adds on top, how ATM fees stack, and why dynamic currency conversion should always be declined.
Exchange rate forecasts: what they can tell you
Why short-horizon currency forecasts fail, what forward rates and analyst targets actually represent, and a practical approach to timing a transfer when you cannot predict the rate.
Looking up a specific rate
For the live reference rate on a specific pair, head to the home page and pick a pair, or jump to a popular one directly: USD to EUR, EUR to USD, USD to GBP, GBP to USD, USD to JPY, USD to CAD.