Natural Calculator is an easy and handy tool used for different mathematical computations: Handy 'paper' data display; Numbers with any quantity of digits and preset calculation precision; Computations with the following number-types: scientific, integer, fraction, and complex; Calculation precision, angular measure, and result view can be set on default for the whole document and separate expressions; User variables and functions; User units of measurement and unit systems and units conversion; and User documents integration with preset variables, functions, and units.
Also Handy automatic recomputation under the user input; Two types of computation windows: standard multilateral document and single formula window; Instant computation under the mouse cursor in a separate window; Integration into mathematical programs that operate formulas in a string view with the clipboard; and Syntax highlighting.