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Why Are Currencies Quoted in Pairs?

Gizmoop Team · 5 min read · May 23, 2026

Currencies are quoted in pairs (EUR/USD, USD/JPY, GBP/USD, USD/PKR) because a currency has no intrinsic value on its own. A dollar is only worth something compared to other dollars, euros, rupees, or commodities. Every exchange rate is a ratio: the price of one currency expressed in units of another.

The basic notation

A currency pair is written as BASE/QUOTE. The first currency (base) is what is being priced; the second currency (quote) is the units in which it is priced.

EUR/USD = 1.08 means "1 euro costs 1.08 dollars". To convert €500 to USD: 500 × 1.08 = $540. To convert $500 to EUR: 500 / 1.08 = €463.

USD/JPY = 154 means "1 dollar costs 154 yen". To convert $100 to JPY: 100 × 154 = ¥15,400. To convert ¥10,000 to USD: 10,000 / 154 = $64.94.

Why pairs?

Money is only useful for buying things. The "value" of a dollar means nothing in isolation; it can only be measured against something else (a euro, a rupee, a gallon of milk, a barrel of oil). Foreign exchange is the market that prices currencies against each other.

Pairs simplify communication. Instead of saying "the dollar is worth 1.08 against the euro and 154 against the yen and 280 against the rupee and 0.79 against the pound", traders can name a single pair (USD/PKR = 280) when discussing a specific rate. Every pair captures a specific bilateral exchange.

Three tiers of pairs

Majors: The seven most-traded pairs, all involving USD. EUR/USD (the most-traded pair in the world, over 25 percent of daily forex volume). USD/JPY. GBP/USD. USD/CHF. AUD/USD. USD/CAD. NZD/USD. These have very tight bid-ask spreads (under 1 pip in interbank trading) and trade 24/5 with high liquidity.

Minors (crosses): Pairs of major currencies that don't include USD. EUR/GBP, EUR/JPY, GBP/JPY, AUD/JPY, EUR/CHF. Spreads are slightly wider than majors but still tight. Less popular but important for European-Asian cross-border trade.

Exotics: Pairs involving emerging-market currencies. USD/TRY (Turkish lira), USD/ZAR (South African rand), USD/INR (Indian rupee), USD/PKR (Pakistani rupee), USD/BRL (Brazilian real). Spreads can be much wider (20-100 pips or more), reflecting lower liquidity, higher risk, and political uncertainty.

Direct vs indirect quotes

From a US perspective: EUR/USD = 1.08 is an indirect quote (foreign currency is the base). USD/JPY = 154 is a direct quote (USD is the base). The direction is purely convention; the math works either way.

From a Pakistani perspective, USD/PKR = 280 is a direct quote (showing how many rupees a dollar costs). PKR/USD = 0.00357 would be the inverse, but no one quotes it that way because the number is too small to be useful.

Pip values

A "pip" (percentage in point) is the smallest standard price movement of a currency pair. For most majors, a pip is the 4th decimal place: EUR/USD moves from 1.0830 to 1.0831 is one pip. For yen pairs, a pip is the 2nd decimal place: USD/JPY moves from 154.20 to 154.21 is one pip. Pip values matter for forex traders; for personal money transfers, they are too small to matter individually.

Spreads

The difference between the bid (what banks buy at) and ask (what banks sell at) is the spread, expressed in pips. Major pairs have spreads of less than 1 pip in the interbank market. Retail traders see spreads of 1-3 pips through their broker. Exotic pairs can have spreads of 20-100 pips. Money changers and remittance services charge much wider effective spreads (2-12 percent of the rate) than the underlying interbank market.

Cross-rates from pairs

If you know EUR/USD and USD/PKR, you can compute EUR/PKR: EUR/PKR = EUR/USD × USD/PKR. So if EUR/USD = 1.08 and USD/PKR = 280, then EUR/PKR = 1.08 × 280 = 302.4. This is how cross-rates between any two currencies are calculated even without direct trading between them. It is also how arbitrage opportunities arise: if the implied cross-rate differs from the directly traded one, traders can profit until prices converge.

Why this matters for everyday users

Most people only encounter one pair at a time: USD/PKR for Pakistani-Americans, GBP/INR for British Indians, AED/PKR for Pakistanis in the UAE. The notation matters because reading "USD/PKR 280" is easier than "the price of a US dollar in Pakistani rupees is 280". For the calculations, our currency converter handles the math automatically across 38+ currencies. Just enter the amount and pick the two currencies.

Frequently asked questions

Because a currency has no absolute value, only a relative value. Asking "what is the price of a dollar?" only makes sense in terms of another currency: a dollar costs 280 Pakistani rupees, or 0.92 euros, or 0.79 British pounds. Every exchange rate is a ratio between two currencies. The notation EUR/USD = 1.08 means "1 euro buys 1.08 dollars".

It is the price of one euro in dollars. So EUR/USD = 1.08 means 1 euro = 1.08 USD. The currency on the left (EUR) is the "base currency" being priced; the currency on the right (USD) is the "quote currency" doing the pricing. To go from euros to dollars, multiply by the rate. To go from dollars to euros, divide by the rate.

The first currency in a pair, the one being priced. EUR/USD = 1.08 means 1 unit of EUR (the base) is worth 1.08 units of USD (the quote). USD/JPY = 154 means 1 USD is worth 154 JPY. The convention is to put the stronger or more globally significant currency as the base, but there are exceptions (EUR/USD, GBP/USD, AUD/USD all have non-USD bases despite USD being globally dominant).

The second currency in a pair. EUR/USD = 1.08, USD is the quote currency. The quote currency tells you the units in which the price is expressed. The quote currency is also called the "counter currency" or "terms currency".

The seven "majors" all involve USD: EUR/USD, USD/JPY, GBP/USD, USD/CHF, AUD/USD, USD/CAD, NZD/USD. These are the most liquid pairs and the most traded. "Minor" or "cross" pairs do not involve USD (EUR/GBP, EUR/JPY, AUD/JPY) and trade with less liquidity. "Exotic" pairs involve emerging market currencies (USD/TRY, USD/ZAR, USD/PKR) and have wider spreads.

Historical convention. The British pound, euro, Australian dollar, and New Zealand dollar are traditionally quoted as base currencies against USD because they were originally pegged to or developed alongside the dollar in ways that made them the "main" currency in the pair. Japanese yen, Canadian dollar, Swiss franc, and most emerging-market currencies are quoted with USD as the base.

In the spot foreign exchange market, rates update continuously during trading hours (essentially 24 hours a day from Monday in Sydney to Friday in New York, with a brief weekend close). Major banks trade with each other every few seconds and the published rates reflect the most recent transactions. Retail providers update their rates every few minutes or based on triggers.

You can flip any pair: EUR/USD = 1.08 means USD/EUR = 1/1.08 = 0.93. Some software flips a pair if the convention changes. Calculators and quote services usually present rates in the conventional direction, but the math works either way. To check, divide 1 by the rate to flip the pair.