It might seem like a glib way to measure currencies, but the magazine says its burger index provides insight into the forces shaping the world economy.
Did you know Cuba has two currencies?
Fears about the Federal Reserve scaling back its massive stimulus program last year rattled investors in emerging markets and pushed exchange rates in Brazil, Indonesia and Turkey sharply lower against the dollar.
And with the exception of Brazil, that made Big Macs more affordable: the BRICS all rate low on the burger index.
Big Macs could be getting even cheaper in emerging markets as new strains begin to show. This week, the Argentine peso collapsed and Turkey's lira plumbed fresh lows amid renewed worries about slowing growth and rising political tensions in developing economies.