Free Parabolas Calculator - Determines the focus, directrix, and other related items for a parabola.

This calculator has 1 input.

This calculator has 1 input.

standard horizontal parabola equation is y^{2} = 4cx

standard vertical parabola equation is x^{2} = 4cy

If the x coefficient is negative, then parabola opens left

If the x coefficient is positive, then parabola opens right

For more math formulas, check out our Formula Dossier

standard vertical parabola equation is x

If the x coefficient is negative, then parabola opens left

If the x coefficient is positive, then parabola opens right

For more math formulas, check out our Formula Dossier

- directrix
- line in a parabola not through the focus
- focus
- fixed point on the interior of a parabola used in the formal definition of the curve
- parabola
- a plane curve which is approximately U-shaped
- parabolas