Big Mac Index

How It Works

The Big Mac Index was conceived as a lighthearted way to illustrate exchange rate theory but has become a legitimate tool cited in academic papers and central bank analyses. The idea is simple: since a Big Mac is a standardized product sold in approximately 120 countries, its local price should reflect the purchasing power of the local currency. If a Big Mac costs $5.69 in the United States and 21.90 yuan in China, the implied exchange rate is 3.85 yuan per dollar — compare that to the market rate to determine whether the yuan is over- or undervalued. The Cheeseburger Index takes a different approach: instead of comparing a branded product across countries, it tracks the raw ingredient costs of a single homemade burger across time and U.S. regions. Where the Big Mac embeds labor, rent, marketing, and profit, the Cheeseburger Index isolates the commodity food costs. The Big Mac has risen from $2.36 in 2003 to $5.69 in 2024, roughly tracking cumulative food-away-from-home inflation of 88% over that period.

Related Terms

• Purchasing Power Parity (PPP) — An economic theory that compares currencies by measuring how much a standardized basket of goods costs in different countries, revealing whether currencies are over- or undervalued.
• Fast Food Pricing — The pricing strategies used by quick-service restaurant chains, where raw food costs typically represent only 25-35% of the menu price, with the rest covering labor, rent, and profit.
• Grocery vs. Restaurant Costs — The price comparison between cooking food at home with grocery ingredients and purchasing equivalent meals from restaurants — home cooking is typically 3-5x cheaper per serving.