The RPNcalc 11 is a full featured scientific RPN calculator.

All Features: at a glance:

• Display & Keyboard:
∙ Fixed number format
∙ Scientific number format
∙ Engineering number format
∙ Backspace

• Math:
∙ +, -, ×, ÷, %, 1/x, root, x^y, pi, ln, log, e, ...and many more
∙ Integer truncation and absolute value
∙ Trigonometric and inverse trigonometric functions
∙ Hyperbolic and inverse hyperbolic trigonometric functions
∙ Trigonometric modes (degrees, radians, grads)
∙ % change

• Statistical:
∙ Mean standard deviation of 2 variables
∙ Summation
∙ Random number generator
∙ Linear regression
∙ Correlation coefficient
∙ Factorial
∙ Gamma
∙ Combinations and permutations

• Scientific and Time:
∙ Polar and rectangular conversions
∙ Decimal hrs / hrs.min.sec. conversions


About RPN:
The Reverse Polish Notation is a mathematical notation in which operators follow their operands. It does not need any parentheses as long as each operator has a fixed number of operands.