Convert Units,Also available on the iPad for free! Just search for Convert Units Free Download the only app .This free (yes, free) application lets you create your own unit conversions for anything you want, quickly and easily. Convert Units for Free is an essential tool.This app is amazingly versatile and user friendly. Unbelievable that it\'s free. Converts dozens of measurements and types and does so easily for those of us with no mathematical abilities whatsoever.