If you are measuring productivity based on Gross Domestic Product (GDP), the ten most productive countries in the world are, in order, the United States, China, Japan, Germany, France, the United Kingdom, Brazil, Italy, Russia and India. Each of these countries has a GDP of two trillion U.S. dollars or more. The countries whose GDPs have the highest rate of growth, also in order, are Turkmenistan, Chad, Mongolia, the Democratic Republic of Congo and the Ivory Coast.

A country's GDP is essentially a measure of the health and size of its economy. It is calculated by estimating the dollar value of all goods produced within a country during a certain time period, most commonly a year. Countries with healthy economies tend to produce more goods and have higher GDPs, and could therefore be said to be the most productive. A growing GDP represents expansion within a country's economy, signaling that it is in the process of becoming more productive.

Another method of analyzing a country's productivity is by calculating its GDP per capita, which is accomplished by simply dividing its GDP by its population. This gives an indication of how productive, on average, each citizen is. If you rank the countries of the world according to GDP per capita, then Luxembourg, Norway, Qatar, Macao (China) and Switzerland are the most productive. This is largely because these countries have small populations, but are in wealthy regions such as Europe and the Middle East. In terms of GDP per capita, the U.S. ranks 10th in the world.