Online Ellipse Area Calculator

1. This tool calculates the area of an ellipse using its semi-major axis and semi-minor axis.

2. Formula: Area of an ellipse = π × semi-major axis × semi-minor axis

(1) The semi-major axis of an ellipse is half of its longest diameter.

(2) The semi-minor axis of an ellipse is half of its shortest diameter.

4. Note: If the number of decimal places in the result exceeds the set limit, the calculation will be rounded to the nearest whole number.