Path of Exile 2's Currency Exchange is a vital feature, allowing you to trade lower-tier currencies for higher-tier ones, either for player trades or crafting. However, determining the current exchange rates can be tricky due to their constant fluctuation.
Because PoE 2's currency exchange rates are dynamic and market-driven, the only reliable way to check them is in-game.
How to Check Currency Exchange Rates in PoE 2

To access the Currency Exchange, speak to the gambling vendor in any Act after reaching Cruel Difficulty. The exchange menu features two currency selection boxes.
Select your desired currency: In the left box, choose the currency you want to obtain (e.g., a Divine Orb).
Select your available currency: In the right box, choose the currency you're willing to trade (e.g., Exalted Orbs).
View the exchange rate: The conversion ratio will be displayed between the boxes. This shows how many of your selected currency are needed to obtain the desired currency.
This process works in reverse as well. If you want to convert a Divine Orb into Exalted Orbs, select Exalted Orbs in the left box and your Divine Orb in the right.
Remember, exchange rates are constantly changing, so check frequently for the best deals. If a particular currency exchange isn't available (e.g., Divine Orbs for Scrolls of Wisdom), no ratio will appear.