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GDP and Growth

What gross domestic product actually measures, how it is calculated, and what it misses — the number behind every headline about a growing or shrinking economy.

4 lessons·19 min total·Free, no signup

01·Lesson
4:50
What is GDP?
Gross domestic product is the single number economists reach for when they want to know whether a country is growing or shrinking. A plain-English walkthrough of what GDP actually measures — the market value of all finished goods and services produced inside a country's borders — the three ways it can be calculated, why real GDP matters more than the nominal headline, what GDP per capita reveals about living standards, and the large slices of economic life the number quietly leaves out.
02·Lesson
4:28
Nominal vs Real GDP
A headline that says the economy grew 5% can be almost entirely inflation. This lesson separates the two GDP figures every economist keeps side by side — nominal GDP, measured at current-year prices, and real GDP, measured at constant base-year prices — and shows why only the second one tells you whether people can actually buy more. Covers the rough subtraction that gets you from one to the other, how the gap compounds across decades of historical comparisons, and why statistical agencies keep moving the base year.
03·Lesson
4:23
The GDP Deflator Explained
If real GDP strips inflation out of the headline number, something has to measure that inflation — and it isn't CPI. The GDP deflator is the ratio of nominal to real GDP expressed as an index, and it covers everything GDP covers: investment goods, government purchases and exports, not just the consumer basket. A walkthrough of how it's built, why it disagrees with CPI, why it gets revised repeatedly, and how to use it to tell price-driven growth apart from real production.
04·Lesson
5:09
GDP Per Capita
A country can have an enormous economy and a poor population — total GDP can't tell the two apart, which is why analysts divide it by the number of people. This lesson covers what GDP per capita reveals about typical living standards, why the real and PPP-adjusted versions are the only ones worth comparing across borders, the rough bands that separate advanced from developing economies, and the two things the average still hides: unequal distribution and population growth eating into the headline.

What is GDP?

Nominal vs Real GDP

The GDP Deflator Explained

GDP Per Capita

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