Disclaimer: use at your own risk.

This page helps calculate sound velocities using Christoffel equation. It can also be used to define the elastic properties of a material before calculating the free vibrations of a 3D object or an infinite cylinder.



This calculator computes the speeds of sound for a given propagation direction from the elastic constants and the mass density. The coordinates of the propagation direction must be expressed in the same spatial units: m, nm, Å, …

To choose a material, enter its mass density and elasticity tensor by clicking a pre-defined material or by entering your own values.

Two buttons allow to determine isotropic approximations: