Reference Cinema 4D Basic Features Create Menu Deformer object
Function available in CINEMA 4D Prime, Visualize, Broadcast, Studio & BodyPaint 3D

Spherify Object

Basic Coord. Object Falloff

Spherify Object

The Spherify deformer attempts to deform the object into a spherical shape according to its Strength setting. The Spherify deformer has two orange handles in the viewport that you can drag interactively to adjust its radius and strength.

To increase the smoothness of the spherical deformation, increase the number of subdivisions of the objects being deformed.
Subdivided cube before deformation.
Strength set to 70% (left). Strength set to 100% (right).