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Time Pricing Big Macs Around the World

Blog Post | Food Prices

Time Pricing Big Macs Around the World

Even if a Big Mac is more expensive in money, it can be less expensive in time.

Summary: Big Mac prices across countries can be better understood by measuring them in terms of time rather than money—specifically, how long people must work to afford one. Comparing time prices reveals meaningful differences in wages and productivity that aren’t obvious from currency values alone.


McDonald’s operates in over 100 countries worldwide. Since 1986, The Economist magazine has published the Big Mac Index, built on the theory of purchasing power parity (PPP)—the idea that exchange rates should equalize the price of an identical basket of goods across countries. The following shows the dollar price of a Big Mac in each country, sorted by price:

But we can go one step further.

Instead of comparing currencies, we can compare time.

We start with the nominal price of a Big Mac in each country, converted to U.S. dollars, and then compare it to average hourly earnings. Since average hourly earnings data are not available for all countries, GDP per capita divided by annual hours worked serves as a reasonable proxy for relative wages between countries.

This transforms the question from “What does it cost?” to “How long do you have to work to get it?” A Big Mac can be more expensive in money but less expensive in time, depending on where you live.

A Big Mac in Taiwan costs only $2.38, compared to $7.99 in Switzerland, but after adjusting for hourly earnings, the time prices are very similar. In Pakistan, a Big Mac costs $3.77, but hourly earnings are $0.86, putting the time price at 4.4 hours. In Denmark, the price is $5.49, but hourly earnings are $57.60, so the time price is under six minutes. For the time it takes a worker in Pakistan to earn enough to buy one Big Mac, workers in Denmark can buy more than 46.

The Big Mac doesn’t just measure currencies; it measures the spread of knowledge.

What looks like inequality in dollars is often a difference in productivity, learning, and institutional capacity. The real divide is not between rich countries and poor countries—it is between places where knowledge compounds and places where it is constrained.

When a sandwich falls from four hours of work to four minutes, something profound has happened—not to the burger, but to the growth and sharing of knowledge.

The story of abundance is not written in dollars. It is written in time.

Find more of Gale’s work at his Substack, Gale Winds.

Phys.org | Food Production

Norway’s Automated Farm Sends Lettuce to Stores

“Norway's first fully automated facility for vegetable production was put into operation last fall. This spring, the first products hit store shelves…

'In this facility, no one touches the lettuce from the time it is sown, grown and packaged until it ends up on the store shelf and is finally opened by the customer at home in their kitchen,' says SINTEF researcher Ottar Bakås.”

From Phys.org.

Phys.org | Cultivated Areas

US Irrigation Avoids More Emissions Than It Emits

“Irrigating U.S. crops prevents higher greenhouse gas emissions by avoiding land conversion, new research by Colorado State University shows. Agricultural irrigation allows the United States to grow more food on less land. If irrigation were suddenly shut off, the land-use change required to make up for lost yields would produce significantly more greenhouse gas emissions than irrigation emits—363 times more.

CSU scientists estimate the emissions saved by avoiding land-use change would equate to 363 years' worth of today's U.S. annual greenhouse gas emissions from irrigation.

Converting natural ecosystems to agricultural use releases carbon stored in soil and vegetation. Land use and land conversion for agriculture to produce food, fiber and fuel contribute nearly a quarter of global greenhouse gas emissions, making the sector a key priority for emissions reductions, the study published in Proceedings of the National Academy of Sciences states.”

From Phys.org.

CGIAR | Food Production

More Can Tho Rice Farmers Adopt Mechanized Seeding

“When the Fertilize Right (FerRight) project began working with rice farmers in Can Tho's Thanh An, Thanh Phu, Thoi Xuan, and Trung Hung communes, mechanized direct seeded rice (mDSR) was practiced by fewer than 1 in 100 of them. Two years later, the project's midline farmer survey found that 18% of farmers in these communes had adopted the technology — up from a 2023 baseline of just 0.7%. Fertilizer deep placement, a complementary practice often paired with mDSR, has also taken hold, now reaching 0.5% of farmers and growing. Together, the numbers are one of the clearest signals yet that the project, funded by the United States Department of Agriculture (USDA) and implemented by the International Rice Research Institute (IRRI), is changing how farmers cultivate their rice.

Unlike traditional broadcast seeding, mDSR, paired with fertilizer deep placement, uses dynamic, air-assisted row seeders to place seed precisely 1 to 2 mm into the soil and deliver nutrients directly to the root zone. Multi-season field trials with the Cuu Long Rice Research Institute (CLRRI), spanning four crops from 2024 to 2026, show why the technology is catching on: seed rates fall by at least 50%, nitrogen fertilizer use drops by at least 20%, and the carbon footprint per kilogram of rice produced falls by at least 10%, alongside more uniform stands and greater resilience to pests, disease, and lodging.

Those gains show up in farmers' fields, too. Comparing mDSR adopters with farmers who still broadcast-seed, the project's farm-level adoption study found mDSR fields yielded 6.81 tons per hectare against 6.67 tons for broadcast seeding — a 2.1% advantage — with nitrogen-use efficiency up 1.4% and net income up 2.7% per hectare.”

From CGIAR.

BBC | U.S. Agriculture

Autonomous Crop Dusters Commercially Approved in US and Brazil

“Self-flying planes have been slower to emerge than self-driving cars, despite operating in what is generally considered a more structured and predictable environment.

That is partly because big tech companies 'doubled down' on cars, pouring vast sums into the technology, says Mykel Kochenderfer, an expert in safe aviation autonomy at Stanford University.

But it is also because aircraft are held to stricter safety standards than cars, creating a much higher bar for deployment…

In the US, the largest autonomous fixed-wing aircraft approved for commercial civilian use so far is Pyka's crop sprayer, which won authorization last year.

Though operations are limited to a tightly defined agricultural setting and require a ground operator and visual observer. It earlier secured similar approval in Brazil, where rules are more permissive…

Supporters say autonomous aircraft could address pilot shortages, remove people from dangerous work such as crop spraying, improve efficiency – for example, by allowing aircraft to carry more cargo – and cut costs if one operator can oversee many planes.

They also argue automation could make flying safer, pointing to past declines in accidents as more automated systems have been introduced.”

From BBC.