<em>For more countries see our</em> <strong><a href= "Graphic detail" blog" src="https://www.economist.com/sites/default/files/20120114_INC380.gif" srcset="https://www.economist.com/sites/default/files/20120114_INC380.gif 1x" width="290" height="386" alt="" data-slim="1" data-teg-id="93c9l9a8jh54nvintfa8l4p0f55vtnn1">

The Economist's Big Mac index is based on the theory of purchasing-power parity: that, in the long run, exchange rates should adjust to equal the price of a basket of goods and services in different countries. Our basket consists of one McDonald's Big Mac, and we've compared it with the average price in America, $4.20. According to our burgernomics, the Swiss franc is 62% overvalued: the exchange rate that would equalise the price of a Swiss Big Mac with an American one is 1.55 francs to the dollar; the actual exchange rate is only 0.96. The cheapest burger is found in India, where it costs just $1.62. Big Macs aren't sold in India, so we've taken the price of a Maharaja Mac, made with chicken instead of beef.