- What Is an ISO Currency Code?
- Function of ISO Currency Codes in Global Markets
- Comparison of ISO Alphabetic vs. Numeric Currency Codes
- Key Currency Codes and Their Market Impact
- What Are Currency Codes in Forex?
- What Are the Top Traded Currencies?
- What Are SWIFT Currency Codes?
- What Is the Currency Code for the USA?
- What Is the Currency Code for the UK?
- The Bottom Line
Key Takeaways
- ISO currency codes are standardized three-letter identifiers for global currencies, established in 1978 by the International Organization for Standardization.
- These codes are used in forex markets to represent currency pairs, which consist of a base currency and a quote currency.
- Each currency has both an alphabetic code and a numeric code under ISO 4217:2015, facilitating clear communication in financial transactions.
- Major currency pairs include EUR/USD, GBP/USD, USD/JPY, and USD/CHF, reflecting the value of one currency against another.
- ISO currency codes are sometimes referred to as SWIFT codes, used in international financial communications.
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ISO currency codes represent global currencies used in forex markets. Established by the ISO in 1978, the three-letter codes facilitate clear communication in financial transactions. Each currency also has a corresponding three-digit numeric code, though less commonly used.
What Is an ISO Currency Code?
ISO currency codes are three-letter alphabetic identifiers for global currencies, standardized by the International Organization for Standardization (ISO) in 1978. In the forex market, these codes appear in pairs, designating base and quote currencies, to price and trade currencies efficiently.
Each alphabetic code also has a corresponding numeric code under the ISO 4217:2015 standard. This global system ensures consistency and reliability in financial transactions and international commerce.
Function of ISO Currency Codes in Global Markets
ISO currency codes are key to currency pairs, which show how currencies are quoted and priced in the forex market. A currency’s value is set by comparing it to another currency.
The first three-digit code used to designate a currency in a currency pair quotation is called the base currency, and the second currency is called the quote currency. The currency pair indicates how much of the quote currency is needed to purchase one unit of the base currency.
For example, EUR/USD represents the euro against the U.S. dollar. EUR stands for euro and USD for the U.S. dollar. If the quote is 1.2500, one euro equals 1.25 U.S. dollars. This means $125 buys €100.
ISO entered currency transactions in 1973, deciding they could help. After five years, they released the first standardized currency codes in 1978.
Comparison of ISO Alphabetic vs. Numeric Currency Codes
ISO 4217:2015 establishes the three-letter alphabetic codes that are used globally for currency exchanges. It also establishes equivalent three-digit numeric codes for each currency. For example, the three-digit numeric code for the U.S. dollar is 840, and the numeric code for the euro is 978.
Usually, you’ll see currency quotes with three-letter codes, not numbers like (978/840). Forex markets prefer these letters. However, both manual and automated systems can use numeric codes.
In some cases, such as trades or orders that make use of computer algorithms, the numeric codes are easier to use and allow for more effective processing.
Key Currency Codes and Their Market Impact
The ISO website provides a full list of currency codes in XML and XMS formats. Major currency pairs have very liquid markets that trade 24/7 on business days and feature narrow spreads.
The major currency pairs are as follows:
Important
Value traded vs. the U.S. dollar is the top criteria for classification as major currency pairs.
Other important currencies include:
What Are Currency Codes in Forex?
In foreign exchange (forex) markets, currency codes are the three letter codes that identify which currency pairs are being traded. For example, USD/CHF is a U.S. dollar and Swiss franc pair. These codes are established by the International Organization for Standardization (ISO) and are used globally.
What Are the Top Traded Currencies?
According to the most recent data from the Bank for International Settlements, eight currencies are present in the majority of global forex trades. They are the U.S. dollar (USD), euro (EUR), Japanese yen (JPY), British pound (GBP), Chinese yuan renminbi (CNY), Australian dollar (AUD), Canadian dollar (CAD), and Swiss franc (CHF).
What Are SWIFT Currency Codes?
What Is the Currency Code for the USA?
The currency code for the United States dollar, the currency of the United States of America, is USD. Its symbol is $. The U.S. dollar is sometimes abbreviated to US$ to distinguish it from other dollar currencies.
What Is the Currency Code for the UK?
The currency code for the British pound sterling, the currency used in the United Kingdom, is GBP. Its symbol is £.
The Bottom Line
ISO currency codes are standardized three-letter identifiers used worldwide to ensure clear communication in financial transactions and forex markets, with corresponding numeric codes outlined in ISO 4217:2015.
Established by the International Organization for Standardization in 1978 and also used in SWIFT banking systems, these codes define base and quote currencies in trading and support accurate, efficient processing across global financial networks.
