Online Calculators

Choose your calculator...

This is the calculator of choice if you are a student of mathematics. There is more than meets the eye, be sure to check the calculator's instruction manual and the blog updates.

Lots of tools for students of statistics, the ever expanding list includes plotting box charts, linear regression, standard deviation and more...

A calculator for elementary arithmetic operations that displays operations and results on a virtual paper roll.

Calculate percentages and percent increase and decrease with this online percentage calculator.

This flash simple calculator implements the 4 basic functions: addition, subtraction, multiplication and division.

Reverse Polish Notation makes entering complex formulas in a calculator easier, but it takes some practice. Try it on this javascript based calculator.

Javascript is used to emulate the functionality of the abacus on your computer. Try the Chinese and Japanese abaci here.

If you are planning to start mining for bitcoins, this calculator may be a useful tool to evaluate your approximate average costs and returns.

Students of mathematics may find some of these calculators useful for checking their homework...