Question 1

What is the FX impact on investment returns?

Accepted Answer

FX impact is the contribution of exchange-rate movement to the total return of a foreign-currency investment, separate from the underlying asset's performance. Suppose you invest USD 10,000 in a Japanese stock that returns 12% in JPY, but the JPY weakens 8% against the USD during the holding period. Your USD return is approximately 3.4% - not 12%. The FX impact was negative 8.6 percentage points on top of the local return. The Worthmap FX Impact Calculator separates these two components so you can see exactly how much of your gain or loss came from the investment versus from currency movement.

Question 2

How is FX profit and loss calculated on a cross-border investment?

Accepted Answer

The calculation has two parts. The local return component: investment amount × (1 + local return %) − investment amount. The FX component: the ending value in foreign currency is then converted at the new exchange rate, and the difference between what you receive in home currency and what you originally converted is the FX gain or loss. Total return = [(investment × (1 + local return)) × (new rate / old rate)] − investment. A stronger foreign currency amplifies local gains; a weaker foreign currency reduces them.

Question 3

What is a forex profit calculator and when should I use one?

Accepted Answer

A forex profit calculator computes the profit or loss on a currency position or a foreign-currency investment when you know the entry rate, exit rate, and position size. Use one when: evaluating whether a past international investment's return was driven by asset performance or currency movement; deciding whether to convert foreign-currency proceeds now or wait; comparing two international investments denominated in different currencies on a home-currency-adjusted basis; or assessing the true cost of making a large purchase abroad.

Question 4

How can currency movements make a profitable investment look like a loss?

Accepted Answer

If your home currency strengthens significantly against the currency of your investment, the exchange-rate loss can exceed the local investment gain. Example: you invest EUR 50,000 in an Australian property fund that returns 9% in AUD. But the AUD weakens 15% against EUR during the holding year. Converting back, your EUR proceeds are EUR 50,000 × 1.09 × 0.85 = EUR 46,325 - a loss of EUR 3,675 despite a positive local return. This is why multi-currency investors must evaluate both the local return and the FX component before assessing performance.

Question 5

Is the FX Impact Calculator free?

Accepted Answer

Yes. The Worthmap FX Impact Calculator is completely free and requires no account. Enter your investment amount, the exchange rates at purchase and sale, and the local investment return to instantly see the total return, local investment gain, FX gain or loss, and a scenario table showing how different exchange-rate outcomes would have changed your result. The calculator runs entirely in your browser.

Calculateur Gratuit Impact FX - Effets des Devises sur les Rendements | Worthmap