Per Capita Gross Domestic Product
Per capita gross domestic product (per capita GDP) is a measure of the economic output of a country divided by its population. It is calculated by dividing a country's gross domestic product (GDP) by the size of its population, and it is frequently used as a proxy for the average level of economic well-being or productivity of a country's residents.[1]
Definition and formula
Per capita GDP is expressed as:
- Per capita GDP = Gross domestic product ÷ Total population
The result represents the average economic output attributable to each person in a country. Because it averages output across the entire population, including people who are not part of the labour force, it should not be interpreted as average income, which is measured more accurately by per capita gross national income or per capita disposable income.[1]
Nominal and PPP variants
Per capita GDP is most commonly reported in one of two ways:
| Variant | Description |
|---|---|
| Nominal per capita GDP | GDP at current market prices converted using market exchange rates; useful for international market comparisons. |
| Per capita GDP (purchasing power parity, PPP) | Adjusts for differences in the cost of living between countries; more useful for comparing living standards. |
The nominal measure does not account for differences in the cost of living or the rate of inflation, whereas the PPP measure adjusts for these factors and therefore provides a better basis for comparing living standards across countries.[1]
Uses and limitations
Per capita GDP is widely used to compare the level of economic development of different countries and to track changes in living standards over time. However, it has significant limitations:
- It does not reflect the distribution of income within a population; a country may have a high per capita GDP alongside severe inequality.
- It does not capture unpaid work, informal activity, or the shadow economy.
- It ignores non-market factors such as health, education, and quality of life.
- It does not account for environmental degradation or resource depletion.
For these reasons, economists supplement per capita GDP with other indicators, such as the Human Development Index, the Gini coefficient, and measures of sustainable development.[1]
See also
- Gross domestic product
- Gross national product
- Purchasing power parity
- Human Development Index
- Standard of living