Currency pairs explained: base, quote, majors, minors and exotics

A currency pair is the price of one currency expressed in another. In EUR/USD at 1.0850, the euro is the base currency, the US dollar is the quote currency, and the price says one euro costs 1.0850 dollars. When you buy the pair you are buying euros and selling dollars at the same time; when you sell it, you are doing the opposite.

Everything else in forex builds on that idea: which pairs exist, why some are cheap to trade and others expensive, and how a move in the price turns into money in your account. This guide walks through it with worked examples.

Why currencies always come in pairs

A share has a price in money. A currency is money, so its price can only be expressed in another currency. That is why there is no single "price of the euro"; there is a price of the euro in dollars, in pounds, in yen, in Swiss francs, and so on.

It also means every forex position is two positions. If you buy EUR/USD, you are long euros and short dollars. If the euro strengthens, you gain. If the dollar strengthens, you lose, even if nothing happened in Europe. Beginners often think of a trade as "a bet on the euro", when the outcome depends just as much on the other side of the pair.

Reading the notation

Currencies are identified by three-letter codes set by the ISO 4217 standard. The first two letters usually identify the country or region and the third the currency name:

• USD US dollar
• EUR euro
• JPY Japanese yen
• GBP British pound (pound sterling)
• CHF Swiss franc
• AUD Australian dollar
• CAD Canadian dollar
• NZD New Zealand dollar

Pairs are written as BASE/QUOTE, sometimes without the slash (EURUSD) on trading platforms. The order is not random. Market convention ranks the main currencies roughly as EUR, GBP, AUD, NZD, USD, CAD, CHF, JPY, and the higher-ranked currency is usually the base. That is why you see EUR/USD and GBP/USD with the dollar second, but USD/JPY, USD/CHF and USD/CAD with the dollar first. A handful of brokers also quote unusual inversions, but you will rarely meet them on mainstream platforms.

Base and quote: what a price really says

Take three example quotes (illustrative prices):

• EUR/USD 1.0850: one euro costs 1.0850 US dollars.
• USD/JPY 150.00: one US dollar costs 150 Japanese yen.
• GBP/USD 1.2700: one pound costs 1.27 dollars.

If EUR/USD rises from 1.0850 to 1.0900, the euro has strengthened against the dollar: it now takes more dollars to buy a euro. If USD/JPY falls from 150.00 to 148.00, the dollar has weakened against the yen: a dollar buys fewer yen.

A quick way to keep it straight: the pair goes up when the base currency strengthens against the quote currency. Buy if you expect that, sell if you expect the opposite. In practice you will see two prices on screen, a lower bid and a higher ask, rather than one. Our guide to reading a forex quote explains that gap, and what is a pip explains how the moves are measured.

Going long and going short

In forex, selling is as normal as buying. You do not need to own euros to sell EUR/USD; on a CFD or rolling spot account you simply open a short position. Your broker's platform treats both directions the same way.

• Long (buy): you gain if the pair rises and lose if it falls.
• Short (sell): you gain if the pair falls and lose if it rises.

Because every pair is two currencies, a short in one pair is economically a long in the inverse. Selling USD/JPY is the same exposure as being long yen against dollars. That matters when you hold several positions: long EUR/USD and short USD/CHF are both short-dollar positions, so they are likely to win or lose together. More on that in the section on correlation below.

The three main categories

Brokers and data vendors group pairs into categories. The labels are informal and not every broker draws the lines in the same place, but the usual scheme is this.

Major pairs

The majors pair the US dollar with one of the other most heavily traded currencies:

• EUR/USD
• USD/JPY
• GBP/USD
• USD/CHF
• AUD/USD
• USD/CAD
• NZD/USD

EUR/USD is the most traded currency pair in the world. The majors have the deepest liquidity, the most participants and, as a result, generally the tightest spreads. Under ESMA rules in the EU (and similar FCA rules in the UK), retail leverage on major currency pairs is capped at 30:1. Be aware that the regulatory definition is not quite the same as the trading-desk one: for the ESMA cap, a major pair is any combination of two of USD, EUR, JPY, GBP, CAD and CHF. That brings in crosses such as EUR/GBP and GBP/JPY, but leaves out AUD/USD and NZD/USD, which are capped at 20:1 for retail clients. Check the margin requirement your broker shows for each pair rather than assuming.

Minor pairs and crosses

A cross is any pair that does not include the US dollar. The most liquid crosses involve the euro, pound and yen, for example EUR/GBP, EUR/JPY, GBP/JPY, EUR/CHF and AUD/JPY. People often use "minors" and "crosses" interchangeably for these.

Crosses are generally liquid but somewhat less so than the majors, so spreads tend to be a little wider. Under ESMA rules, retail leverage on currency pairs outside the regulatory definition of a major is capped at 20:1, so the margin needed per lot is higher on those. As noted above, some euro, pound and yen crosses still count as majors for this purpose.

Exotic pairs

An exotic pair combines a major currency with one from a smaller or emerging economy, for example USD/TRY (Turkish lira), USD/ZAR (South African rand), USD/MXN (Mexican peso), EUR/PLN (Polish zloty) or USD/SGD (Singapore dollar).

Exotics typically have:

• much wider spreads, sometimes many times wider than EUR/USD;
• larger and more abrupt moves, including gaps when local news hits;
• large swap charges or credits, because interest rates in emerging markets can be far from those in the US or eurozone;
• thin liquidity outside local trading hours.

There is nothing wrong with trading exotics in principle, but the costs and risks are of a different order. A strategy that looks fine on EUR/USD can fail entirely on an exotic once the true spread and swap are included. See spreads and commissions and swap and overnight financing.

What about gold and silver?

Many platforms list XAU/USD (gold) and XAG/USD (silver) alongside currencies, using the same pair notation, because precious metals were historically traded by the same bank desks. They behave differently from currencies, have their own contract sizes and are subject to different leverage caps (20:1 for gold under ESMA rules, 10:1 for other commodities including silver). Treat them as a separate instrument, not as one more pair.

How cross rates are calculated

Because the dollar is so central, crosses are effectively derived from two dollar pairs. Here is a worked example with illustrative prices.

Suppose EUR/USD is 1.0850 and GBP/USD is 1.2700. What is EUR/GBP?

• One euro buys 1.0850 dollars.
• One pound buys 1.2700 dollars.
• So one euro buys 1.0850 divided by 1.2700 pounds, which is about 0.8543.

Now suppose USD/JPY is 150.00. What is EUR/JPY?

• One euro buys 1.0850 dollars, and each dollar buys 150 yen.
• So one euro buys 1.0850 multiplied by 150.00 yen, which is 162.75.

The rule of thumb: if the dollar is the quote currency in one pair and the base in the other, multiply. If it is the quote currency in both (as with EUR/USD and GBP/USD), divide. In practice large crosses are also traded directly, but arbitrage keeps the direct price and the calculated one very close.

This is also why crosses can move without any news about either currency. EUR/GBP moves whenever EUR/USD and GBP/USD move by different amounts.

Turning pair moves into money: pip values

Your gain or loss on a pair is first earned in the quote currency. That is why a pip is not worth the same amount on every pair. A standard lot is 100,000 units of the base currency.

• EUR/USD: a pip is 0.0001. On one standard lot, 100,000 times 0.0001 is 10 US dollars per pip.
• GBP/USD: same structure, so also 10 dollars per pip on a standard lot.
• USD/JPY: a pip is 0.01. On one standard lot, 100,000 times 0.01 is 1,000 yen per pip. At a USD/JPY rate of 150.00, that is about 6.67 dollars per pip.
• EUR/GBP: a pip is 0.0001, so 10 pounds per pip on a standard lot. If your account is in euros or dollars, the broker converts that at the current rate.

The platform does the conversion into your account currency for you, but you should know roughly what it is before you trade, because it sets how much a given stop-loss distance will cost. Our guide to lot sizes and position sizing covers lot sizes in detail.

Worked example: same idea, three different pairs

Imagine you think the US dollar will weaken and you want to express that view with a mini lot (10,000 units). These are illustrative numbers only.

Option 1: buy EUR/USD at 1.0850. The pair rises to 1.0900, a 50-pip move. On a mini lot, a pip is worth 1 dollar, so the gain is 50 dollars before costs. Had it fallen 50 pips, the loss would have been 50 dollars.

Option 2: sell USD/JPY at 150.00. The pair falls to 149.50, also a 50-pip move. On a mini lot, a pip is worth 100 yen, so the gain is 5,000 yen. At 149.50 that converts to about 33.44 dollars. Same view, same pip count, different money result, because the pip value is different.

Option 3: sell USD/TRY. An exotic pair might move hundreds of pips in a day, the spread could be many times that of EUR/USD, and the swap on a short USD/TRY position, where you are effectively holding the higher-yielding lira, could be very different in sign and size from what you would expect on a major. The same dollar view now carries a different risk profile altogether.

The lesson: choosing the pair is part of the trade. Before entering, check the pip value, the typical spread, the swap in both directions and the margin requirement. Our guide to leverage and margin shows how to work out the margin.

Characteristics of the main pairs

Every pair has its own personality, shaped by the economies behind it and who trades it. Some general, well-known traits:

• EUR/USD reflects the two largest currency blocs. It is driven heavily by the relative policies of the Federal Reserve and the European Central Bank and by US and eurozone data.
• USD/JPY is sensitive to the gap between US and Japanese interest rates and to shifts in risk appetite. Japan's authorities have intervened in the past to slow sharp yen moves.
• GBP/USD, sometimes called "cable", tends to react strongly to UK data and Bank of England decisions, and can be more volatile than EUR/USD.
• USD/CHF: the Swiss franc has a long reputation as a currency that attracts demand in times of stress, and the Swiss National Bank has a history of active intervention.
• AUD/USD and NZD/USD are often linked to commodity prices, Chinese demand and global risk sentiment.
• USD/CAD has a connection to oil prices, as Canada is a major oil exporter, although that relationship is far from constant.

These are tendencies people observe over long periods. They change and break down, sometimes for years at a time, so treat them as context rather than as rules to trade on. Our guides to central banks and interest rates and how economic data moves forex go deeper.

Correlation: when different pairs are the same trade

Because the dollar is in every major pair, many pairs move together. EUR/USD and GBP/USD often move in the same direction. EUR/USD and USD/CHF often move in opposite directions, because one has the dollar as the quote and the other as the base.

This matters for risk. Suppose you buy EUR/USD, buy GBP/USD and sell USD/CHF, each risking 1% of your account. You might think you have three separate trades. In practice you have one large short-dollar position, and on a day the dollar rallies broadly, all three can lose together. Your real risk is closer to 3% on one idea.

Correlations change over time and can break down suddenly, so do not treat them as fixed. But as a habit, before opening a new position, ask: which currencies am I already long and short? Our position sizing guide covers how to set the risk per idea rather than per ticket.

Choosing which pairs to trade

There is no best pair, but there are sensible starting points.

1. Start with one or two majors. Costs are lowest, information is plentiful, and price behaviour is smoother.
2. Match the pair to your hours. If you can only trade in the European morning, a pair that is active then, such as EUR/USD, GBP/USD or EUR/GBP, makes more sense than AUD/NZD. Our guide to forex market hours and sessions covers when each pair is busiest.
3. Check the real cost. Compare spreads and commissions for the pairs you trade at your broker, not the headline minimum spread on EUR/USD. See how to choose a forex broker.
4. Check the swap if you hold overnight. On some pairs it is a meaningful cost.
5. Learn the calendar. Each pair has key data releases and central bank meetings. Use an economic calendar to know when they are.

Common mistakes

• Reading the direction backwards. On USD/JPY, a rising price means a stronger dollar. On EUR/USD, a rising price means a weaker dollar. Mixing these up has caught out many beginners on their first short.
• Assuming a pip is always 10 dollars. It is only 10 dollars per standard lot when the dollar is the quote currency and your account is in dollars. For everything else, convert.
• Trading exotics with a majors budget. The spread on an exotic can make a short-term strategy unworkable before the price even moves.
• Stacking correlated trades. Several positions that all depend on the dollar's direction are one trade with larger risk.
• Ignoring the quote currency's news. A EUR/USD trade can go wrong because of a US data surprise as easily as a European one.
• Trading too many pairs. Following twenty pairs thinly is harder than following two well, and it makes your trading journal much less useful.

Remember too that most retail CFD accounts lose money, as the risk disclosures brokers are required to publish make clear. Choosing liquid, lower-cost pairs does not change that by itself, but it removes one of the avoidable reasons. Our glossary defines any terms you meet along the way.

Frequently asked questions

What is the base currency in a pair?

The base currency is the first one listed. The price tells you how many units of the second (quote) currency it takes to buy one unit of the base. In GBP/USD at 1.2700, the pound is the base and one pound costs 1.27 dollars.

What is the difference between a major and a cross?

A major pair includes the US dollar and one of the other most traded currencies, such as EUR/USD or USD/JPY. A cross is any pair without the US dollar, such as EUR/GBP or GBP/JPY. Crosses are usually slightly more expensive to trade. Note that the ESMA leverage rules use their own definition: crosses made only of USD, EUR, JPY, GBP, CAD and CHF count as majors (30:1), while other pairs, including AUD/USD, are capped at 20:1.

Which currency pair is the most traded?

EUR/USD is the most traded currency pair in the world according to the BIS Triennial Survey. USD/JPY and GBP/USD are also among the most heavily traded.

Why are exotic pairs more expensive to trade?

Fewer participants trade them, so liquidity is thinner and dealers quote wider spreads to protect themselves. Interest rates in the countries involved can also differ greatly from those in the US or eurozone, which can make overnight swap charges large.

Does it matter which currency is first?

Yes. It determines what a rising or falling price means and which currency your gains and losses are first measured in. Buying USD/JPY is a bet that the dollar strengthens against the yen; buying EUR/USD is a bet that the euro strengthens against the dollar.

How many pairs should a beginner trade?

Fewer is better. One or two liquid majors are enough to learn how prices behave, how costs add up and how news affects them. Add more only once you have a tested approach and a record of how you trade the first ones.