Guide · 7 min read
The Big Mac Index, explained: what a burger reveals about your money
A sandwich with a fixed recipe turns out to be one of the clearest ways to compare currencies and living costs. How it works, and where it breaks.
In 1986 The Economist published a joke that refused to die. The idea: take one product built to the same recipe almost everywhere — a McDonald’s Big Mac — and compare its price across countries. Because the burger is nearly identical, its price is a surprisingly clean signal of what a currency actually buys. Four decades later, the Big Mac index is still one of the most intuitive economics lessons going.
The core idea: purchasing power parity, in a bun
Economists have a theory called purchasing power parity (PPP): in the long run, a basket of goods should cost the same everywhere once you convert currencies. The Big Mac is a one-item basket. If a Big Mac costs $6.12 in the United States but only $2.47 in Taiwan, the theory says Taiwan’s currency is “undervalued” against the dollar — your dollar stretches further there. At the other end, a Big Mac runs about $9.08 in Switzerland, a hint that its currency is strong (or its costs are high).
Why a burger works better than it should
The Big Mac quietly bundles a lot of local economics into one number: the cost of beef, bread and lettuce, but also rent, electricity, wages and tax. That is why it tracks broader price levels so well. It is not a precise exchange-rate model — nobody trades currencies off burger prices — but as a back-of-the-napkin gauge of “is this place expensive?” it is remarkably honest.
Where it breaks
The index has real limits, and they are worth knowing. Labour is cheaper in poorer countries, which drags their burger price down for reasons that have nothing to do with the currency being mispriced. A Big Mac is also a discretionary treat in some places and an everyday meal in others. And local factors — a beef tariff, a rent spike, a franchise pricing quirk — can move a single country. Treat it as a conversation starter, not a verdict.
The version we find more useful: minutes of work
The dollar price tells you about currencies. Divide it by the local wage instead and you get something more human: how long you work for lunch. On that measure a Big Mac is lightest in Hong Kong at about 6 min of work, and heaviest in Pakistan at roughly 5.4 hrs. Same sandwich; a very different bite out of your day.
Explore the full ranking — dollar price and minutes of work, side by side — on the Big Mac index page, updated from The Economist’s 2026-01-01 survey and World Bank incomes.