calcoo [OPTION]


Calcoo is a scientific calculator designed to provide maximum usability. The features that make Calcoo attractive are:


bitmapped button labels and display digits to improve readability


no double-function buttons - you need to click only one button for any operation (except for arc-hyp trigonometric functions)


undo/redo buttons


both RPN and algebraic modes


display marks to separate thousands


copy/paste interaction with the X clipboard


two memory registers with displays


displays for Y, Z, and T registers


Like in a regular calculator. Settings (switching between RPN and algebraic modes, rounding, RPN stack behavior) can be accessed by pressing the button labelled "!". The button labelled "?" brings up the help/info window.


Calcoo accepts the following command-line options:

-h, --help

Show summary of options and exit.

-v, --version

Print version number and exit.


The webpage for Calcoo is at

There you can find more information about Calcoo and download the latest version.


Alexei Kaminski ([email protected])


None I am aware of. If you find any, please report them.