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Enter three out of the six variables in a triangle, and this will solve for the rest.

Solve quadratic, cubic and quartic equations easily.

A calculator that is easy to use, with numerous functions including trigonometery, powers, roots and more.

This free javascript calculator allows the user to input their credit card balance, interest rate and either monthly payment or desired number of months to pay off the card.

Here's a useful tool you can use to calculate your PayPal fees.

For our second program, we decided to make something a bit more simple.

Tigra Calculator is free JavaScript widget that allows your visitors to make different calculations right on your site.

This script will factor and solve, for both values of X, any quadratic equation that has real number solutions.

Type in the number of drinks, the amount of time, and your weight in pounds, and this calculator will estimate the resulting BAC.

The Quadratic Equation Solver posted on this page solves for both real and imaginary (if applicable) results.