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The **Ellipsoid Calculator** provides equations and data to compute the volume, surface area , mass and weight of ellipsoids including the specials cases of an ellipsoid: the oblate spheroid and the sphere.

**Ellipsoid - Volume**computes the volume of an ellipsoid based on the length of the three semi-axes (a, b, c)**Ellipsoid - Surface Area**computes the surface area of an ellipsoid based on the length of the three semi-axes (a, b, c)**Ellipsoid - Mass or Weight**computes the mass or weight of an ellipsoid based on the length of the three semi-axes (a, b, c) and the mean density.**Ellipsoid Cap - Volume**computes the volume of a section of an ellipsoid.**Oblate Spheroid - Volume**computes the volume of an Oblate Spheroid based on the length of the two semi-axes (b, c)**Oblate Spheroid- Surface Area**computes the surface area of an Oblate Spheroid based on the length of the two semi-axes (b, c)**Oblate Spheroid- Mass or Weight**computes the mass or weight of an Oblate Spheroid based on the length of the two semi-axes (b, c) and the mean density.**Sphere - Volume**computes the volume of a sphere based on the length of the radius (a)**Sphere - Surface Area**computes the surface area of a sphere based on the length of the radius (a)**Sphere - Mass or Weight**computes the mass or weight of a sphere based on the length of the radius (a) and the mean density.**Circular - Volume**: Computes the volume of a column with a circular top and bottom and vertical sides.**Circular - Mass:**Computes the mass/weight of circular volume based on its dimensions and mean density.**Elliptical Volume**: Computes the volume of a column with an elliptical top and bottom and vertical sides.**Elliptical - Mass**: Computes the mass/weight of an elliptical volume based on its dimensions and mean density.**Ellipse Vertical Chord from Edge (VE):**Computes the length of the vertical chord of an ellipse based on distance from the edge.**Ellipse Vertical Chord from Center (VC):**Computes the length of the vertical chord of an ellipse based on distance from the center.**Ellipse Horizontal Chord from Edge (HE):**Computes the length of the horizontal chord of an ellipse based on distance from the edge.**Ellipse Horizontal Chord from Center (HC)**: Computes the length of the vertical chord of an ellipse based on distance from the center.**Common Mean Density**: Provides a lookup function to find the mean density of hundreds of materials (woods, metals, liquids, chemicals, food items, soils, and more)

An ellipsoid has three axes if different lengths. However each axis has the cross-section of an ellipse. When the two of the axes have the same length, the formulas are simplified to create an oblate spheroid. When all three axes are the same length, the result is a perfect sphere.