Kalkules is an universal scientific freeware calculator with an amount of nontraditional functions, which can be used particularly by high school or university students.

• evaluating whole expressions ( ex: 5 + 10 / 3 )
• drawing function graphs
• calculating with real complex or modulo numbers
• calculating in four number systems: binary, octal, decimal, hexadecimal
• calculating with fractions ( ex: 5 / 2 + 1 / 3 = 17 / 6 )
• calculating with polynomials
• evaluation history
• unlimited count of brackets in the expression
• wide range of arithmetic goniometric and hyperbolic functions
• using self-named variables ( ex: radius, volume, ... )
• inserting some of the predefined constants + ability to define your own constants
• inteligent percentage calculations
• and much more...