GDP and exchange rates are linked
Comparing Official exchange rate, LCU per USD, period average with GDP (constant LCU), per unit of GDP across 188 countries, 2022–2026.
- Rank correlation
- +0.76
- Holding size constant
- +0.71
- Countries compared
- 188
- Period
- 2022–2026
What might link these
A strong relationship between GDP per unit and official exchange rates may suggest that countries with higher GDP have more stable or valued currencies. However, a careful reader should consider inflation as a likely confounder, as it can affect both GDP and exchange rates. The partial correlation controlling for population and GDP helps to mitigate some potential biases.
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. This correlation could mislead by implying a direct causal link between GDP and exchange rates, when in fact other economic factors like inflation or trade balances may be driving the relationship.
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.