KUnitConversion provides functions to convert values in different physical units. It supports converting different prefixes (e.g. kilo, mega, giga) as well as converting between different unit systems (e.g. liters, gallons). The following areas are supported: * Acceleration * Angle * Area * Currency * Density * Energy * Force * Frequency * Fuel efficiency * Length * Mass * Power * Pressure * Temperature * Time * Velocity * Volume