- Calculators
- ::
- Analytic Geometry
- ::
- 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.

working...

Examples

ex 1:

Find the center and the radius of the circle $(x - 3)^2 + (y + 2)^2 = 16$

ex 2:

Find the center and the radius of the circle $x^2 + y^2 + 2x - 3y - \frac{3}{4}
= 0
$

ex 3:

Find the equation of a circle in standard form, with a center at $C(-3,4)$ and
passing through the point $P(1,2)$.

ex 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$.

Related calculators

Find more worked-out examples in our database of solved problems..

Search our database with more than 300 calculators

446 663 115 solved problems

×

ans:

syntax error

C

DEL

ANS

±

(

)

÷

×

7

8

9

–

4

5

6

+

1

2

3

=

0

.