How to use Ellipse Calculator
- Semi-Major Axis (a): The longest radius.
- Semi-Minor Axis (b): The shortest radius.
- Calculate: Find the Area and Perimeter.
About Ellipse Calculator
The Ellipse Calculator solves for the properties of an oval shape. Unlike a circle, an ellipse has two radii (semi-major and semi-minor axes).
It calculates the Area (π * a * b) and approximates the Perimeter (circumference) using Ramanujan's formula.