How to use this calculator
- Enter foreign-currency asset return (%), change in home units per foreign unit (%).
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Home return = (1+foreign asset return)×(1+FX change)−1.
Assumptions and limitations
Unhedged holding-period model; fees, withholding tax and cash-flow timing are excluded.
Worked example
With foreign-currency asset return (%) = 10, change in home units per foreign unit (%) = -5, home-currency return is approximately 4.5%.
What the result means
A weaker foreign currency can offset a positive asset return.
Common questions
How should I interpret home-currency return?
A weaker foreign currency can offset a positive asset return.
What should I check before using this result?
Unhedged holding-period model; fees, withholding tax and cash-flow timing are excluded.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.