About the Polynomial Equation Solver

The Polynomial Equation Solver finds all roots — real and complex — of quadratic, cubic and quartic equations using exact algebraic methods (quadratic formula, Cardano's method for cubics, Ferrari's method for quartics). Results include real and imaginary parts with 6-figure precision.

How to use the Polynomial Equation Solver

  1. Select the degree (quadratic, cubic or quartic).
  2. Enter the coefficients.
  3. Click Solve to get all roots instantly.

Frequently asked questions

Is this tool free to use?

Yes. The Polynomial Equation Solver is completely free with no sign-up and no limits.

Is my data uploaded to a server?

No. All calculations run in your browser using JavaScript. Nothing is sent to any server.

Does it work offline?

Yes. Once the page is loaded, all computations work without an internet connection.

Does it work on mobile?

Yes, it works in any modern browser on desktop, tablet and mobile.

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