Ellipse Calculator

Calculate ellipse area, circumference approximation, eccentricity, and foci

A = pi ab; C uses Ramanujan's second approximation
Area
75,398224
Circumference approximation
31,730879
Eccentricity
0,745356
Focal distance
4,472136
Ellipse diagramEllipse with labeled major axis, minor axis, center, and foci.major axis = 12minor axis = 8F1F2