Do you need to know how much your dollar is worth in Japan or how much your pound has fallen against the dollar? If so then Currate.com's Google Maps based currency conversion tool can help.
To use the tool you just need to drag one marker on the Google Map to indicate the country whose currency you wish to convert. Next, drag a marker onto the country whose currency you wish to convert to. Finally, enter the amount of currency you wish to convert and Currate.com will calculate your currency's worth based on the rates of various international banks.