The Big Mac Index was introduced by The Economist magazine in 1986 as an informal tool to gauge currency exchange rates. It is grounded in the Purchasing Power Parity (PPP) theory, which posits that exchange rates should eventually adjust to equalize the prices of identical goods and services in different countries. The index evaluates and contrasts the cost of a Big Mac in various local currencies worldwide, offering a straightforward yet effective method to assess the relative strength of currencies. For instance, a Big Mac is priced at 4.49 in Britain and US$5.69 in the United States, resulting in an implied exchange rate of 0.79. The discrepancy between this figure and the actual exchange rate indicates that the British pound may be overvalued by 0.36%. Despite its simplicity, the Big Mac Index prompts discussions on the impact of market dynamics, local taxes, and consumer purchasing power on commodity prices. This uncomplicated economic metric serves as a vivid illustration of global economic disparities and facilitates public comprehension and engagement with intricate concepts like PPP. Moreover, it has stimulated debates on currency valuation, offering a relatable benchmark due to the widespread presence of the Big Mac. Furthermore, the inflation rate in the