The Money Converter is a good currency exchange calculator. The website's interface is user-friendly as it allows one to select the currency on either of two drop-down menus and insert the figures to be converted. The calculator converts figures up to four decimal places.
The Money Converter provides the latest conversion rates recorded based on the performance of each currency at the close of daily trade. It also has a live feed plugin that shows how different currencies are performing against the U.S. dollar. Each currency's abbreviation or symbol is placed against the flag of its nation for easy recognition.