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`m = [4/3 * pi * "a" * "b" * "c" ]* "mD" `

Enter a value for all fields

The **Weight or Mass of an Ellipsoid** calculator computes the weight or mass of an ellipsoid with semi-axes of lengths a, b, and c (see diagram), where the composition of the ellipsoid has a mean density (mD).

**INSTRUCTIONS:** Choose your preferred length units (e.g. meters, miles) and enter the following:

- (
**a**) semi-axis of the ellipsoid. - (
**b**) semi-axis of the ellipsoid. - (
**c**) semi-axis of the ellipsoid. - (
**mD**) the mean density of the sphere

**Mass of Ellipsoid (m):** The mass of the ellipsoid is returned in kilograms. However, this can be automatically converted to other mass and weight units (e.g. pounds, tons, grams) via the pull-down menu.

Note: the mean density (mD, μD, ρ) of many common substances, elements, liquids and materials can be found by **CLICKING HERE. **

**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.**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.

This formula computes the volume of the geometric shape based on the input parameters. With the computed volume, this formula then executes the simple equation below to compute the approximate mass of the object.

where:

- rho is the mean density