You can rotate objects in The Sims 4 by right-clicking, using the comma and period keys, or pressing the bumpers.

Rotate objects 45 degrees in The Sims 4 To rotate an item by 45 deegree increments, left-click to select an object and right-click to rotate it clockwise in increments.

This guide shows players how to rotate objects freely and at a 45-degree angle in The Sims 4.