This website provides a portal to a wide variety of calculators arranged by category for quick access.
Below you'll find some all purpose easy-to-use calculators:

Basic Button-Type Calculator

Expression Solver


Basic Statistics - Single Array

Advanced Statistics - Two Arrays

These calculators are provided courtesy of Suites.
Below you'll find reference material to assist you in your calculations.

List of Equations - Organized by Subject

eBooks - Algebra, Trigonometry & Calculus