Calculate the area of an ellipse using the semi-major axis (a) and semi-minor axis (b). If both axes are equal, use the Circle Area Calculator. Results automatically convert to square feet, square meters, and acres.
The formula is A = π × a × b, where a and b are the semi-major and semi-minor axes.
If a = b, the ellipse becomes a circle.
Area measures two-dimensional surface space and is expressed in square units.