What Is a Currency Pair? How to Read the Base, the Quote and the Price
A currency pair is two currencies quoted against each other, such as EUR/USD. The first one is the base currency, which is the one you buy or sell. The second is the quote currency, which is the one the price is written in. For example, a price of 1.1000 means one euro costs 1.1000 US dollars. Buying the pair means buying euros and paying in dollars.
If you read a pair backwards, you can open a trade in the wrong direction or misjudge what a price move is worth to you. Both mistakes cost real money, so it is worth getting this right before your first trade.
How to read a currency pair quote
Every pair follows the same layout: base currency, then quote currency, then a price. The currencies use three-letter codes, such as EUR for the euro, USD for the US dollar, JPY for the Japanese yen and GBP for the British pound. Some platforms write EUR/USD and others write EURUSD. It is the same pair.
The price is an exchange rate. It tells you how many units of the quote currency buy one unit of the base. The base is always "one". The figure below labels each part.
You may see the quote currency called the "counter" or "terms" currency.
Which digit of the price matters
Traders do not track the whole price. They count small steps in one digit. On most pairs that is the 4th decimal place. On yen pairs, whose prices are large numbers like 150.00, it is the 2nd decimal place. That standard step is called a pip: 0.0001 on EUR/USD and 0.01 on USD/JPY.
Many platforms show one extra digit: a 5th decimal on most pairs, or a 3rd on yen pairs. That digit is a fraction of a pip, one tenth of a step. In the example quotes below, EUR/USD at 1.10012 is 1.1001 plus two tenths of a pip, and USD/JPY at 150.253 is 150.25 plus three tenths of a pip.
What buying or selling a pair actually does
A pair moves as a single price, so you cannot trade only one side of it. When you buy (go long) EUR/USD, you buy euros and sell dollars at the same time. When you sell (go short), you sell euros and buy dollars.
The rule is simple. If you expect the base to gain against the quote, buy. If you expect the quote to gain against the base, sell. Before every order, say the trade in one sentence: "I am buying the first currency and selling the second." If that sentence does not match your view, reverse the order. The order tickets below show which way each currency moves.
Many beginners ask how they can buy EUR/USD without owning any dollars. With a retail broker you do not hand over dollars or receive euros. Your position follows the price. When you close it, the result is booked as a profit or loss in your account currency. That is why you can trade a dollar pair from a pound or euro account.
Every pair also shows two prices, not one. The bid is the price you can sell at, and the ask is the price you can buy at. The ask is always slightly higher. The gap between them is the bid-ask spread, and you pay it on every trade. In the example below, the bid is 1.10000 and the ask is 1.10010.
If you buy at the ask and sell straight back at the bid, you lose the gap. In this example, that is 1.10010 − 1.10000 = 0.00010 per euro. On a position of, say, 10,000 euros, that is 10,000 × 0.00010 = 1 USD before the price has moved. Every trade starts that far behind.
Your profit is counted in the quote currency first
On any pair, your gain or loss comes out in the quote currency first. Your broker then converts it into your account currency.
The two examples below use simple illustrative numbers.
Example 1: EUR/USD. Suppose you buy 10,000 euros at an ask of 1.1000. Later you close by selling at a bid of 1.1050.
- Cost when you open: 10,000 × 1.1000 = 11,000 USD
- Value when you close: 10,000 × 1.1050 = 11,050 USD
- Profit: 11,050 − 11,000 = 50 USD
Suppose the price had fallen to 1.0950 instead. The same arithmetic gives 10,950 − 11,000 = −50 USD, a loss of 50 dollars. The quote currency here is the dollar, so the result is already in dollars.
Example 2: USD/JPY. In this pair, the dollar is the base and the yen is the quote. Suppose you go long 1,000 US dollars at 150.00 and the price rises to 151.00. The calculation below shows what you made.
You made 1,000 yen, not 1,000 dollars. If your account is in dollars, the broker converts it at the current rate in one line: 1,000 ÷ 151.00 ≈ 6.62 USD. A full 1.00 move on the chart was worth less than seven dollars at this size.
The trap: a 1.00 move on USD/JPY looks 100 times bigger than a 0.0100 move on EUR/USD. Yet at 1,000 units of the base currency it paid about $6.62, against 1,000 × 0.0100 = $10.00 on EUR/USD, as the chart below shows. Always convert a move into your account currency before comparing pairs.
Where the US dollar sits tells you where your profit lands
The US dollar dominates currency trading. The Bank for International Settlements' 2025 Triennial Central Bank Survey found the US dollar on one side of 89.2% of all global FX trades. So the first thing to check on any pair is where the dollar sits: first, second or not at all.
| Where USD sits | Examples | Your profit lands in | Conversion needed for a USD account? |
|---|---|---|---|
| Second (quote) | EUR/USD, GBP/USD, AUD/USD | US dollars | No |
| First (base) | USD/JPY, USD/CHF, USD/CAD | Yen, Swiss francs, Canadian dollars | Yes |
| Not in the pair | EUR/JPY, AUD/CAD, EUR/GBP | The second currency (JPY, CAD, GBP) | Yes |
If your account is in pounds or euros, check whether the quote currency matches your account currency, not the dollar. GBP/USD profit still needs converting for a GBP account.
You will also see names for these layouts. USD in second place is called "American terms", and USD in first place is called "European terms". A pair with no dollar in it is a cross currency pair.
Be careful with the words "direct" and "indirect". Some sources call USD-first pairs direct. Others use "direct" for prices quoted in dollars, which is the opposite. Go by where the dollar sits, not by the label.
Major, minor and exotic pairs: what changes for you
Brokers sort pairs into three groups. The group tells you roughly how much it costs to trade the pair and how sharply its price can move.
| Group | What is in it | Examples | What to expect |
|---|---|---|---|
| Major | USD paired with another leading currency | EUR/USD, USD/JPY, GBP/USD, USD/CHF, USD/CAD, AUD/USD, NZD/USD | Highest liquidity, tightest spreads |
| Minor (cross) | Two major currencies, no USD | EUR/GBP, EUR/JPY, GBP/CHF | Less liquid than majors, still actively traded |
| Exotic | A major currency with one from a smaller or emerging economy | USD/MXN (US dollar vs Mexican peso) | Lower liquidity, higher volatility, wider spreads |
Liquidity means how many buyers and sellers are active in a pair. More of them usually means a smaller gap between bid and ask.
The group label is only a guide, so check the spread you are actually quoted. Here is a rule you can use: divide the spread by the move you are aiming for. The answer is the share of your target that the cost takes. Take the example spread above, 0.00010, and the 0.0050 move from Example 1: 0.00010 ÷ 0.0050 = 0.02, or 2% of the target. Suppose another pair quoted a spread of 0.0010 for the same target: 0.0010 ÷ 0.0050 = 0.20, or 20%. Run this check before you trade any pair you have not traded before, and compare the answer with a major pair for the same target. If the share is clearly bigger, that pair is too expensive for that trade: choose a more liquid pair or aim for a bigger move. On thin exotic pairs, also allow for a sharp move jumping past the level where you planned to exit.
Mistakes that cost beginners money on currency pairs
Reading a rising pair as "the base is strong". EUR/USD can rise because the euro is gaining or because the dollar is falling. If your idea is about one currency, check it against a second pair. If EUR/USD and EUR/JPY are both rising, the euro itself is probably firm. If only EUR/USD is rising, the move may just be dollar weakness. The figure below shows the two cases side by side. Comparing pairs this way is the idea behind currency strength.
Flipping a quote in your head. USD/EUR is not EUR/USD with the same number. To invert a quote, divide 1 by the price. If EUR/USD is 1.1000, one dollar buys 1 ÷ 1.1000 ≈ 0.9091 euros. Get this wrong and every level you plan from that number is wrong too.
Assuming every market quotes a pair the same way. Futures markets sometimes quote a pair the other way round from spot, so the chart can look mirrored. Check the contract specification before assuming a convention.
FAQ
Why does my broker's price differ from the exchange rate in the news?
Forex has no single official price. Each broker streams its own bid and ask from the banks and liquidity providers it deals with, so quotes differ slightly. News rates are often reference figures: central banks publish daily reference rates for record-keeping. You cannot trade at them. You trade at your broker's bid and ask, so those are the prices to plan with.
Why is it EUR/USD and not USD/EUR?
The order follows a long-standing market convention, not a rule each broker sets. The euro comes first against every other currency. Next come the British pound, the Australian dollar and the New Zealand dollar, then the US dollar, then the rest. Whichever currency ranks higher on that list is the base, so on a pair you have never seen, such as GBP/CAD, you can tell the pound is the base. If you are ever unsure, read the name: the first code is always the base.
Does every currency pair trade around the clock?
Spot forex trades around the clock on weekdays, but activity in a pair is not even across the day. A pair is busiest when the financial centres of its two currencies are open. For example, EUR/USD is busiest during the European and US sessions. Outside those hours, spreads on the same pair can widen, so check the quote before you trade at quiet times.
How the Forex Market Works: Who Trades, How Prices Form, When It OpensNext lesson →
What Is the Purpose of Forex Trading? Hedging vs Speculation Explained
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