Handy and useful expression calculator and converter with skins and lots of features Handy and useful expression calculator and unit converter with skins. Main features: fully customizable interface with skins\; keyboard shortcuts\; all arithmetic operations, more than 20 functions\; editable lists of constants and unit conversions\; recalling previously used expressions\; five result formats with changeable precision\; automatic clipboard copy/paste\; minimizes to the system tray.