Math Calculators, Lessons and Formulas

It is time to solve your math problem

mathportal.org

# Circle equation calculator

This calculator can find the center and radius of a circle given its equation in standard or general form. Also, it can find equation of a circle given its center and radius. The calculator will generate a step by step explanations and circle graph.

Circle equation calculator
0 1 2 3 4 5 6 7 8 9 / . del
Graph a circle
Show me an explanation
Circle equation calculator
0 1 2 3 4 5 6 7 8 9 - / . del

Find the equation of a circle in form, with a center at $~C~\Large($ , $~ \Large) ~$
and $~P~\Large($ , $~ \Large) ~$ .

Graph a circle
Show me an explanation
examples
example 1:
Find the center and the radius of the circle $(x - 3)^2 + (y + 2)^2 = 16$
example 2:
Find the center and the radius of the circle $x^2 + y^2 + 2x - 3y - \frac{3}{4} = 0$
example 3:
Find the equation of a circle in standard form, with a center at C(-3,4) and passing through the point (1,2).
example 4:
Find the equation of a circle in standard form, with a center at $C \left(\frac{1}{2}, -\frac{3}{2} \right)$ and a radius of $r = 5$.

Quick Calculator Search