What is GDP and GNP and Methods to Calculate it In this article we will know what is GDP and how it is calculated. In the next parts of this article we will discuss about how NNP, NDP, GNP, GDP, NNPFC, NNPMP are different from each other. We will also discuss what the GDP at constant price and GDP at current price are. By the way, all the notes related to Economics are being added on this page, which you cannot afford to miss. By the way, you can find all the notes of Economics on this page. Gross Domestic Product All those things which are produced inside the country or within the country economic value. Here, Domestic means within the country and all things means both goods and services. Gross National Product (GNP) All those things which are produced inside the country PLUS income which have come from outside, their economic value. Suppose, a person named 'A' brought the money abroad to America, to our country India = counted in GNP. On the other hand, '...