What is the Inequality Calculator?

Solve linear and quadratic inequalities step by step. Enter your inequality expression and get the solution set with a number line representation. Free online inequality solver.

Is the Inequality Calculator free to use?

Yes. The Inequality Calculator is free to use on Calculate.co.nz, with no sign-up, paywall or account required.

Is the Inequality Calculator made for New Zealand?

Yes. It is built for New Zealand and uses current New Zealand rules and rates where they apply. Results are indicative estimates and not financial advice.

Inequality Calculator

Replace the default values in the quadratic inequality in the form of ax2 + bx + c below. The function crosses the x-axis at two places at most. These places are called the roots and they can be found using the quadratic formula:

Knowing these roots help us determine where the function is less than, equal to and greater than zero. Try out this calculator to see how it is done.

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x² + x + 0

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