Middle class by global standards, however, can be substantially different to how those living in the West see it. Globally, a person living on $10-20 a day would be considered middle income. In 2011, only 16% of the world’s population could say they were living on $20 dollars or more a day.
The study takes into consideration purchasing power, so these dollar figures are made in what is called purchasing power parities, or PPP. This means the exchange rate adjusts so that an identical good in two different countries has the same price.
So where do you stand on the global scale? Use this calculator to find out.