In other words, it shows the ratio of exchange rates of different countries in terms of Big Macs. The Big Mac Index is a variant of determining purchasing power parity (PPP) expressed in terms of the price of a burger. This indicator is not among the official ones, but it is known almost all over the world. Below you will find out what this indicator is, on the basis of which it is calculated and what practical significance it has, as well as see examples of similar indices. For more than 30 years, The Economist magazine has been calculating the Big Mac Index.