Purchasing Power Parity (PPP) allows the comparison of different countries' GDP data through a "basket of goods" approach which is considered a fairer comparison than using exchange rates. Purchasing power parity allows for economists to compare economic productivity and standards of living between countries.
Prices are converted to international dollars. An international dollar (int$) has the same purchasing power over GDP as a United States dollar.
Data source: World Bank, Washington D.C.