WP Currency Converter

Just add a list of available currencies in the backend (under the Settings option) and drag the widget to one of the sidebars.

The plugin will then allow frontend users to select two currencies and convert a value of funds between them.

The exchange rates and conversions are handled via Google.

Installation:

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

What is new in this release:

• Adding internationalization capabilities.

What is new in version 1.3:

• Changing to Google Finance.

What is new in version 1.2:

• Added shortcode "wpcc".
• Added default currency list on activation on plugin activation for new installs.

What is new in version 1.1:

• Fixing conversion widget.

What is new in version 1.0:

• First version.

Requirements:

• WordPress 3 or higher