AllerCalc is an expression calculator that lets you directly enter an expression to be evaluated. The calculator features a rolling display storing all of your recent inputs and results. More than one hundred built-in functions are supported, including algebraic, transcendental, trigonometric, hyperbolic and financial functions.It includes a detailed help file containing syntax, usage, and examples for all of the supported functions. Options let you display large fonts, keep the calculator always on top, choose general or scientific number format, and display the accuracy of the results from 0 to 10 decimal places. The calculator also provides a list of common physical constants, and performs various conversions between English and metric units. You can store results in variables, and work with non-decimal bases (2 to 36).AllerCalc is free for personal use.This program was previously known as VersaCalc.