List of countries by GDP

(GDP) is the of all final goods and services from a nation in a given year. Countries are sorted by nominal estimates from financial and statistical institutions, which are calculated at market or government official s. Nominal GDP does not take into account differences in the  in different countries, and the results can vary greatly from one year to another based on fluctuations in the s of the country's. Such fluctuations may change a country's ranking from one year to the next, even though they often make little or no difference in the standard of living of its population.

Comparisons of national wealth are also frequently made on the basis of (PPP), to adjust for differences in the cost of living in different countries. PPP largely removes the exchange rate problem, but has its own drawbacks; it does not reflect the value of economic output in, and it also requires more estimation than nominal GDP. On the whole, PPP per capita figures are less spread than nominal GDP per capita figures.

Lists
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 * style="width:50%; text-align:center;" | List of Countries by GDP (nominal)
 * style="width:50%; text-align:center;" | List of Countries by GDP per capita
 * style="width:50%; text-align:center;" | List of Countries by GDP per capita