Find exchange rates for most currencies, including the United States dollar and the Japanese yen, at XE.com and X-Rates.com. Exchange rates fluctuate constantly due to a variety of factors, and both of these sites provide up-to-date exchange values of the U.S. dollar and Japanese yen.
XE.com provides currency exchange information, financial news and a brief analysis of currency markets and exchanges. X-Rates.com, in addition to up-to-date currency conversion rates, gives historical exchange rates, monthly averages and graphs of pertinent data. As of November 1, 2015, the exchange rate for the Japanese yen to the U.S. dollar is 1 yen to $0.083.