The Big Mac Index, published by The Economist since 1986, is one of the world's most recognized purchasing power benchmarks. It uses the price of a McDonald's Big Mac — a product available in nearly identical form in 70+ countries — as a real-world affordability signal.
The Big Mac Index compares the local price of a Big Mac (in USD terms) to the US price. The ratio between these two prices creates a simple purchasing power indicator.
If a Big Mac costs $5.69 in the US and the equivalent of $2.34 in India, the Big Mac ratio is 0.41. Applied to a $9.99 app: $9.99 × 0.41 ≈ ₹449 (after currency conversion and tier snapping).
The intuition is simple: the price of a Big Mac already reflects local wages, rent, ingredients, and taxes. If local consumers pay 41% of the US price for comparable goods, your app should cost roughly 41% of the US price too.
The Big Mac ratio is the local Big Mac price (in USD) divided by the US Big Mac price. The app price is then adjusted by this ratio and snapped to the nearest store tier.
| Region | Big Mac (USD) | Ratio | App Price |
|---|---|---|---|
| United States | $5.69 | 1.00 | $9.99 |
| Euro Area | $5.82 | 1.02 | €9.99 |
| United Kingdom | $4.52 | 0.79 | £6.99 |
| Japan | $3.38 | 0.59 | ¥980 |
| India | $2.34 | 0.41 | ₹449 |
| South Africa | $2.72 | 0.48 | R 79.99 |
| Indonesia | $2.52 | 0.44 | Rp 69,000 |
FAQ
The Big Mac Index was invented by The Economist in 1986 as a lighthearted guide to whether currencies are at their 'correct' level. It compares the price of a McDonald's Big Mac across countries. If a Big Mac costs $5.69 in the US and ¥450 in Japan, the implied PPP exchange rate is 79 yen per dollar. The index has since become a widely-cited shorthand for purchasing power differences.
The Economist publishes Big Mac prices for about 55-70 countries, depending on the edition. This is fewer than the World Bank's 176-country PPP dataset, so you may need a fallback strategy for smaller markets. BasePrice automatically falls back to World Bank PPP for countries not covered by the Big Mac Index.
It's a proxy, not a precise measure. A Big Mac reflects local food costs, labor, and rent — not digital spending habits. However, research shows it correlates well with broader purchasing power metrics. For app pricing, it provides a practical and intuitive starting point, especially when combined with other signals.
The Economist typically publishes updated data twice per year (January and July). This is more frequent than the World Bank annual update but less frequent than live exchange rates. For most apps, semiannual repricing aligned with these updates is a reasonable cadence.