Is this quadratic solver free?

Yes, completely free with no signup and no usage limits.

Does my data leave my device?

No. All calculations happen locally in your browser with JavaScript.

Yes. Works on iPhone Safari and Android Chrome without installing any app.

Quadratic Equation Solver

Solve ax² + bx + c = 0. Shows discriminant, real or complex roots, and full working via the quadratic formula.

100% client-side · no upload

a x²

b x

= 0

Enter the coefficients a, b, and c for your quadratic equation ax² + bx + c = 0.
Click Solve. The discriminant (Δ = b² − 4ac) determines the nature of roots.
If Δ > 0: two distinct real roots. If Δ = 0: one repeated root. If Δ < 0: two complex conjugate roots.

Is this quadratic solver free?: Yes, completely free with no signup and no usage limits.
Does my data leave my device?: No. All calculations happen locally in your browser with JavaScript.
Does it work on mobile?: Yes. Works on iPhone Safari and Android Chrome without installing any app.