Quadratic Vertex Calculator
Find the vertex of a quadratic equation ax²+bx+c. Free, instant.
How to Use Quadratic Vertex Calculator
1
Enter coefficients a, b, c.
2
Get vertex x-coordinate.
3
y = plug x back into equation.
Frequently Asked Questions
What is the vertex?
The highest or lowest point of a parabola, at x = -b/(2a).