RRs Unit Converter is an useful tool for metric conversion, weight conversion or any other unit conversions performed by scientist, engineers or students. Simple or compound units. User defined database. Over 1000 units with definition. User defined complex compound unit conversion like Fuel Consumption or Price Conversions( USD/gallon to Euro/liter). And more.

The license of this software is Free Trial Software, the price is $34.95, you can free download and get a free trial.