输入您的沙发尺寸和旋转楼梯测量数据——应用会检查内侧通行空间、头部空间和旋转半径。
Whether it fits comes down to the measurements most people skip.
Real openings run about 1 to 2 inches under the labeled size, and a single inch can flip the result. Check your own measurements before you buy or move.
Verdicts compare all six item orientations against the space using verified building standards. See our methodology
“Wish I'd used this before trying to force a fridge up the stairs.” — Lesson learned
Measure smart
Four numbers decide nearly every fit check. Get these right and the rest follows.
Don't make these
Most “it didn't fit” stories trace back to one of these oversights.
Frequently asked
这取决于旋转梯的直径。标准的5英尺（60"）直径旋转楼梯只有约22–26英寸的净踏步宽度——对标准三座沙发（84"长）来说太窄了。6英尺或更大的旋转梯通过巧妙调角度可能容纳双人沙发（60"长）。大多数全尺寸沙发无法通过旋转楼梯。
01净踏步宽度是从中心柱到外缘的测量值，再减去栏杆厚度。对于60"直径的旋转梯，可用踏步宽度通常为22–26英寸。对于72"直径的，约为28–32英寸。这比标准直楼梯窄得多。
02选项包括：由专业搬运工使用吊装设备从窗户或阳台吊运、使用外部楼梯（如果有）、选择可以拆成小块搬运的模块化或组合沙发，或购买专为窄通道配送设计的沙发（某些厂商提供此服务）。
03标准双人沙发（长52–60" × 宽30–35"）若竖直倾斜，可能能通过更大的旋转楼梯（直径72"以上）。双人沙发宽度（30–35"）必须小于净踏步宽度。把它竖起来，在攀爬时持续旋转。
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