There are three
lists of countries of the world sorted by their gross domestic product (GDP) (the value of all final goods and services produced within a nation in a given year). The GDP dollar estimates given on this page are derived from
purchasing power parity (PPP) calculations. Using a PPP basis is arguably more useful when comparing generalized differences in living standards on the whole between nations because PPP takes into account the relative cost of living and the inflation rates of the countries, rather than using just exchange rates which may distort the real differences in income. However, economies do self-adjust to currency changes over time, and technology intensive and luxury goods, raw materials and energy prices are mostly unaffected by difference in currency (the latter more by subsidies), despite being critical to national development, therefore, the sales of foreign apparel or gasoline per liter in
China is more accurately measured by the nominal figure, but everyday food and haircuts by PPP.
Several economies which are not considered to be countries (world, EU, and some dependent territories) are included in the list because they appear in the sources. These economies are not ranked in the charts here, but are listed in sequence by GDP for comparison.
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