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United States dollar
Find the currency code, symbol, and every published country that uses USD.
- Currency code
- USD
- Currency name
- United States dollar
- Symbol
- $
- Countries using it
- 12
Countries using USD
Frequently asked questions
What is the ISO 4217 currency code for United States dollar?
The currency code for United States dollar is USD. ISO 4217 codes are three-letter identifiers used by banks, payment systems, and accounting software to name a currency unambiguously across languages and borders.
What does the code USD stand for?
The first two letters of USD usually come from the issuing country's ISO 3166-1 code, and the third letter from the currency name. Codes are assigned by the ISO 4217 maintenance agency so each currency keeps one stable identifier worldwide.
What is the currency symbol for United States dollar?
The commonly used symbol for United States dollar is $. Symbols are informal shorthand, so the three-letter code USD remains the unambiguous way to write an amount.
How many countries use United States dollar?
USD is used by 12 published countries, listed on this page. Shared currencies such as the euro mean a single code can cover many countries.
Why is an ISO 4217 code better than a symbol?
Symbols like $ or £ are shared by several different currencies, which causes confusion in international transactions. The three-letter code USD always identifies exactly one currency, which is why payment and accounting systems rely on it.