The straight section of a hallway is rarely the problem - it is the corners. When furniture reaches a 90-degree turn, the item must pivot within a limited space defined by the widths of both corridors. Understanding the geometry helps you know before moving day whether the turn is possible.
When you pivot a rectangular item around a 90-degree hallway corner, the item sweeps an arc defined by its length and depth. The inner corner of the hallway acts as the pivot point. The item's length determines the outer radius of the sweep, while its depth determines how much corridor width you need on the inside of the turn. Longer items need wider corridors; deeper items need even wider corridors because the item takes up more space as it rotates.
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Frequently asked
For a standard 84-inch couch, you need approximately 42 inches on each side of a 90-degree turn for a flat pivot. If one corridor is narrower, tilt the couch vertically — the footprint drops from 84" × 35" to 35" × 33", which fits through any code-compliant hallway corner.
01The "moving sofa problem" is a famous unsolved math puzzle about finding the largest area shape that can navigate an L-shaped hallway. In real life, the answer depends on your couch dimensions and hallway widths. Our calculator handles the practical version with real measurements.
02Professional movers typically tilt furniture vertically at corners, use furniture sliders for heavy pieces, and may temporarily remove banisters, door trim, or hallway fixtures for extra clearance. They also scout the path in advance and plan their pivot strategy before committing to the turn.
03Enter your item and space above, get an instant fit verdict.
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