AllerCalc

AllerCalc (formerly known as VersaCalc) is an Expression Calculator which allows you to directly enter an expression to be evaluated. This versatile calculator features: Key Features: A re-sizable rolling display storing all of your inputs and results. More than one hundred functions, including algebraic, transcendental, trigonometric, hyperbolic, engineering, statistical, and financial functions. Numerical integration, differentiation, and root-finding. Calculations not only in Decimal but also in binary, octal, hexadecimal, and other numeric bases. A comprehensive Unit Converter that can convert Between virtually any two units in metric, English, and US systems. A list of common physical constants found in science and engineering. User-defined constants, conversions and functions. Storing results in an unlimited number of variables.