Formula Octahedron Volume Side length
$$V ~=~ \frac{ \sqrt{2} }{ 3 } \, a^3$$ $$V ~=~ \frac{ \sqrt{2} }{ 3 } \, a^3$$
Volume
$$ V $$ Unit $$ \mathrm{m}^3 $$ The volume of an octahedron enclosed by eight isosceles triangles.
Side length
$$ a $$ Unit $$ \mathrm{m} $$ The length of the side of an isosceles triangle. An octahedron has a total of twelve sides of equal length.