As of September 1, the current exchange rate is 105 dinar to the U.S. dollar.  For the most common business/tourist visa, the fee will be 16,800 dinar.  Please bring exact change 
Making appointments with the U.S. Embassy is free of charge. You should only pay the visa application fee when you come to the U.S. Embassy in Algiers.
Brooklyn Bridge

Welcome to the U.S. Visa Information Service for Algeria. On this website you can find information about U.S. immigrant and nonimmigrant visas and the requirements to apply for each. You can also learn how to pay the required visa application fee, and book an interview appointment at the U.S. Embassy in Algiers.

This is the official visa information website of the U.S. Mission in Algeria.