An expression calculator and unit converter which allows you to directly enter an expression to be evaluated. It is a handy and nice skinnable replacement for the standard Windows calculator with many additional features.
Fully customizable interface with skins support
Can be called by pressing just one button
All arithmetic operations and over 20 functions
Editable lists of constants and unit conversions
Recalling previously calculated expressions
Five result formats with changeable precision
Automatic clipboard copy/paste
Minimizes to the system tray
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