To facilitate an international comparison of standards of living, the World Bank compares incomes and converts currencies to dollars on the basis of purchasing power. This measure is reported in

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The World Bank converts currencies to international dollars based on purchasing power to facilitate an international comparison of standards of living. This measure adjusts for differences in the cost of living across different countries and is therefore a more accurate depiction of relative standards of living than simply using U.S. dollars or a trade-weighted dollar. Real U.S. dollars, adjusted for inflation, would not be as useful for international comparisons because inflation rates can vary widely across countries.

To Facilitate an International Comparison of Standards of Living, the World