Exchange Rates
High School
Definition
The price of one country's currency in terms of another, set in currency markets. Exchange rates affect the cost of imports and exports and influence trade and travel between countries.
Worked examples
If 1 U.S. dollar exchanges for 0.85 euros, an American buying a €100 item pays about $118.
A stronger dollar (higher rate) makes imports cheaper; a weaker dollar makes them more expensive.
When the British pound weakens from $1.40 to $1.25, UK exports become cheaper for American buyers.
A falling exchange rate makes a country's goods less expensive abroad, boosting export demand.
Common mistakes
- A stronger home currency always helps the economy → A stronger currency helps importers but hurts exporters Exporters earn less when foreign buyers' money converts to fewer home-currency units.
- Exchange rates are fixed and never change → Most exchange rates float daily based on supply and demand in currency markets Only a few countries peg their currency; most rates fluctuate constantly.
- The exchange rate only matters for tourists → Exchange rates affect the price of all imported and exported goods and services Businesses importing materials or selling abroad face real costs tied to currency shifts.
Where you'll use it next
You'll use exchange rates when studying international trade, balance of payments, and monetary policy in economics courses, and when analyzing how global markets and foreign investment work.
See also
International TradeGlobalizationMonetary PolicyMeasuring Economic PerformanceForeign PolicyEconomic Systems
Reviewed by Pat Cheng, M.Ed. — StudyPug Curriculum Lead · Last updated June 6, 2026