The currency of Afghanistan. Currency Code (AFA) is AFN. Afghanistan is one of the poorest countries in Asia has three official currencies: the Afghanis, Pakistan Rupees, and Uzbeki Rubles. The Afghanis are pegged to the U.S dollar at a rate of 438 AFN per USD.Afghanistan's economy has been struggling since long before Western troops began arriving in 2001 as part of Operation Enduring Freedom to fight terrorism following September 11th terrorist attacks on United States soil by al-Qaeda militants that killed nearly 3000 people.