Higher currency values often align with higher GDP per capita across countries.
Comparing GDP per capita (current US$) with US dollar per domestic currency (End-of-period (EoP)) across 176 countries, 2022–2025.
- Rank correlation
- +0.59
- Holding size constant
- +0.44
- Countries compared
- 176
- Period
- 2022–2025
What might link these
Wealthier countries may have stronger currencies due to higher demand for their assets or stable economic policies. However, exchange rates are also influenced by short-term factors like interest rates or speculation, which may not reflect long-term economic strength.
Why this is not proof of anything
This is a correlation across countries, not an experiment. It cannot show that either indicator causes the other, and both may simply follow a third thing. Currency values can fluctuate due to temporary factors, making the relationship less stable than it appears.
The second figure above repeats the measurement with national population and income held constant. It is the more conservative number: a relationship that largely disappears there was mostly telling you that larger, richer countries have more of most things.
How this was measured
Both indicators were ranked across every country reporting each, and the two rankings compared — ranks rather than raw values, because a handful of very large countries can otherwise manufacture a relationship on their own. The calculation is arithmetic over figures already published on this site; the commentary above is drafted from the two indicator names and the resulting coefficients.