Xchangeonline is a tool that provides currency conversion and rounding functionality that can be integrated with other applications. Their selling point is that, unlike other currency conversion tools available, their service is easy for anyone to use, reliable and affordable. The Xchangeonline API makes it possible for third party developers to access this functionality.
Xchangeonline offers a variety of plans to suit different needs. All of the plans include the following features:
The Xchangeonline API is easy to use. Developers simply request the URL, specifying the function they require, the amount, the current currency, the desired currency and the API key (i.e. http://www.xchangeonline.com/convert/AMOUNT/FROM/TO/APIKEY/ ). The desired result is then returned. More information is available on the Xchangeonline website.