By this module, Rate Exchange Calculator is a module for Joomla 1.5, you can add your defined your default currency, and some rate exchange values with symbols (up to 10 currencies), and displaying it at your frontend, and then allow your visitor to calculate with 4 operators (x, /, +, -).

In new version, version 1.1.0, the module will be displayed as fixed position in the bottom of page, you can change it by edit the css file.