International dollar
The international dollar is a hypothetical unit of currency that has the
same purchasing power that the U.S. dollar has in the United States at a given point in time. It shows how much a local currency unit
is worth within the country's borders. Conversions to international dollars are calculated using purchasing power parities (PPP). It is comparisons both between countries and over time. For example, comparing per capita gross domestic product (GDP) of various countries in international dollars, rather than based simply on exchange rates, provides a more valid
measure to compare standards of living.
Figures expressed in international dollars cannot be converted to another country's currency using current market exchange
rates; instead they must be converted using the country's PPP exchange rate used in the study.
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