Ellipsoid Calculator

An ellipsoid is a 3D surface where all cross-sections are ellipses. It is the generalisation of a sphere — a sphere is a special case where all three semi-axes are equal

The calculator uses the standard published formula for ellipsoid is a 3d surface where all cross-sections are ellipses. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Volume = (4/3) × π × a × b × c, where a, b, c are the three semi-axes. Each step in the calculation is shown so you can verify the result manually.