Forex Currency Pairs Explained
A forex currency pair expresses the price of one currency in another. EUR/USD, for example, tells you how many US dollars equal one euro. The relationship matters: a currency can rise against the dollar while falling against the pound. As the Reserve Bank of Australia explains exchange rates, the price is always relative.
For anyone studying forex trading, reading the pair correctly comes before interpreting its chart. You need to know which currency you are buying, which you are selling, and what a price change means for the position.
How to Read a Currency Pair
The first currency is the base currency. The second is the quote currency, sometimes called the counter currency. The exchange rate states how many units of the quote currency equal one unit of the base currency. This is the convention described in CME Group’s guide to FX quotations.
At EUR/USD 1.0800, one euro equals 1.08 US dollars. At USD/JPY 150.00, one US dollar equals 150 Japanese yen. The dollar changes position between those pairs, so the meaning of an upward move changes too.
| Currency pair | Base currency | Quote currency | Example rate | Meaning |
|---|---|---|---|---|
| EUR/USD | Euro | US dollar | 1.0800 | €1 equals US$1.08 |
| USD/JPY | US dollar | Japanese yen | 150.00 | US$1 equals ¥150 |
| GBP/USD | British pound | US dollar | 1.2500 | £1 equals US$1.25 |
| EUR/GBP | Euro | British pound | 0.8600 | €1 equals £0.86 |
If EUR/USD rises from 1.0800 to 1.0900, the euro has appreciated against the dollar: each euro buys more dollars. If USD/JPY rises from 150.00 to 151.00, the dollar has appreciated against the yen. In both cases, the base currency has gained relative to the quote currency.
A higher numerical exchange rate does not, by itself, identify a better trade. USD/JPY at 150 is not “more expensive” than EUR/USD at 1.08 in any useful comparison. They measure different currency units.
What Buying and Selling a Pair Means
Buying a pair, or going long, creates exposure to the base currency rising against the quote currency. Selling a pair, or going short, creates the opposite exposure. Buying EUR/USD means buying euros against dollars; selling EUR/USD means selling euros against dollars.
Consider a hypothetical purchase of 10,000 euros through EUR/USD at an execution price of 1.0800. Closing that position at an execution price of 1.0850 produces a US$50 gain before commissions and financing:
10,000 × (1.0850 − 1.0800) = US$50
Closing at 1.0750 instead produces a US$50 loss before those charges. These calculations use actual assumed entry and exit prices, not a chart’s midpoint, so any spread effects embedded in those prices should not be deducted again.
The exposure does not necessarily mean receiving spendable foreign cash. The CFTC’s explanation of retail forex transactions notes that individual traders usually close their commitments and realize gains or losses rather than take delivery. Our guide to how forex trading works covers the broader transaction process.
Bid, Ask and Spread: Why Every Pair Has Two Prices
A tradable quote normally contains a bid and an ask. The bid is the price at which you can sell the base currency; the ask is the price at which you can buy it. The difference is the spread. The SEC’s forex investor bulletin explains these pricing conventions and why the spread represents a trading cost.
Suppose EUR/USD shows a bid of 1.0800 and an ask of 1.0802. You buy at 1.0802. If you immediately sell without either quote changing, you sell at 1.0800. On 10,000 euros, that difference costs US$2 before any commission.
This explains why a new position can start with an unrealized loss even though the market barely moved. The broker has not misplaced two dollars; you crossed the spread.
When comparing pairs, compare their trading costs as well as their charts. A wider spread requires a larger favorable move to cover the same opening and closing process. A commission charge can sit alongside that spread, rather than replace it. See forex broker spreads for the cost mechanics.
Major, Minor and Exotic Currency Pairs
These labels help organize the market, but they are not universally standardized rankings. Brokers and educational sources sometimes draw the boundaries differently, as IG’s explanations of currency pair categories acknowledge.
Major Currency Pairs
A common retail convention groups seven dollar pairs as majors: EUR/USD, USD/JPY, GBP/USD, USD/CHF, AUD/USD, USD/CAD and NZD/USD. Some sources distinguish four traditional majors from the three commodity currency pairs, including IG’s guide to major forex pairs. The category is therefore a convention, not a promise that these are always the seven largest markets by turnover.
Our major currency pairs guide compares their characteristics. For this overview, the point is that all seven contain the US dollar, but it is not always the base currency.
Minor Currency Pairs and Crosses
In common retail usage, minors pair established currencies without the US dollar. Examples include EUR/GBP, EUR/JPY and GBP/JPY. They are also called crosses. “Cross” is the broader description: a pair can exclude the dollar without necessarily belonging to a broker’s minor category.
A cross lets you express a relative view more directly. If your idea concerns the euro outperforming sterling, EUR/GBP addresses that comparison more directly than EUR/USD. The minor currency pairs guide examines these markets separately.
Exotic Currency Pairs
Exotics generally combine a major currency with one from a smaller or emerging economy. Examples include GBP/MXN, the pound against the Mexican peso, and USD/PLN, the dollar against the Polish zloty.
Compared with heavily traded majors, these pairs often have lower liquidity and wider spreads, a distinction covered in OANDA’s currency pair overview. However, the label does not tell you the exact cost or risk of an individual trade. Check the instrument itself. Our exotic currency pairs guide covers those differences.
How Pips Translate Price Changes into Money
A pip is a conventional unit used to measure exchange rate movements. For most commonly traded pairs, one pip is 0.0001. For pairs with the Japanese yen as the quote currency, it is normally 0.01. Platforms can display fractional pips, often called pipettes, as described in OANDA’s explanation of pips.
A move in EUR/USD from 1.0800 to 1.0850 is 50 pips. A move in USD/JPY from 150.00 to 150.50 is also 50 pips. Those moves do not automatically produce the same monetary result.
For a position measured in base currency units:
Pip value in quote currency = position size × pip size
A 10,000 euro EUR/USD position therefore has a pip value of US$1. A 10,000 dollar USD/JPY position has a pip value of ¥100. Converting the latter into dollars requires an exchange rate. The guide to pips and pip values develops those calculations without assuming every pip is worth the same amount.
What Makes a Currency Pair Move?
Exchange rates respond to conditions on both sides of the pair. Interest rates, inflation, trade flows and the relative economic outlook can change currency demand. CME Group’s discussion of currency fundamentals emphasizes comparing the two economies rather than evaluating either in isolation.
That gives a useful practical rule: a positive view of the euro is not enough to justify buying EUR/USD. You also need a view of the dollar. Both currencies could strengthen against sterling while the euro still falls against the dollar.
Markets also respond to surprises, not just whether a headline sounds good or bad. Research from the RBA on economic announcements and the Australian dollar examines the gap between expected and actual releases. Strong employment growth can disappoint if traders expected something stronger.
Different currencies also have different sensitivities. The RBA’s explanation of Australian dollar exchange rate drivers highlights commodity export prices, interest rate differences and investor appetite for risk. These relationships are influences, not mechanical trading signals.
Before trading, check the economic calendar for both currencies. Our forex fundamental analysis guide explains how to assess those releases in context.
How Currency Pairs Connect to Each Other
Pairs share currencies, so they cannot be treated as unrelated markets. Cross rates can be calculated through a third currency, as shown in the RBA’s explanation of cross exchange rates.
Using hypothetical midpoint prices of EUR/USD 1.0800 and GBP/USD 1.2500:
EUR/GBP = 1.0800 ÷ 1.2500 = 0.8640
The dollars cancel, leaving pounds per euro. Actual tradable quotes require the appropriate bid and ask prices, but the calculation shows why movements in dollar pairs can affect a cross.
Shared currencies also create overlapping exposure. Applying the buying rules above, a long EUR/USD position and a long GBP/USD position both sell dollars. They are two trades, but part of the same directional bet. A dollar rally against both currencies would hurt both positions.
Do not assume historical co-movement is permanent. OANDA’s currency correlation methodology measures relationships across different time windows. Review exposure by currency, not just by the number of symbols open on your screen.
Choosing Which Currency Pairs to Follow
Start with the conditions you can observe and the risks you can measure. A short watchlist makes it easier to record costs, follow relevant announcements and check whether your reasoning was correct. More charts do not automatically mean more useful information.
Match the pair to your available hours. Trading activity varies across sessions. OANDA’s pair selection guide discusses how sessions, volatility and costs affect the choice. Use the forex market hours guide to relate those sessions to your own schedule rather than copying someone else’s routine.
Separate market size from your execution conditions. The BIS reported average daily OTC forex turnover of approximately US$9.5 trillion in April 2025 in its December 2025 analysis of global FX activity. That includes spot transactions and derivatives such as swaps, forwards and options. It does not describe the liquidity available for every retail pair at every moment.
Translate the trade into an account currency loss. Before placing an order, calculate what your proposed exit distance means at your chosen position size. Do not select a size simply because the platform permits it. The CFTC’s forex risk advisory warns that margin trading can produce losses beyond the amount deposited. Our forex position sizing guide covers the calculation process.
A useful final check is to explain the position in plain English: “I am buying this currency against that currency, at this price, with this amount exposed.” If that sentence is unclear, the trade ticket can wait.