Math · NUMORA
Quadratic Calculator
ax² + bx + c = 0.
Open interactive calculatorHow to use
Discriminant Δ = b² − 4ac.
Formula
x = (−b ± √Δ) / 2a
FAQ
Is this Quadratic calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
Discriminant Δ = b² − 4ac.
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