Will a fridge (91x86x178 cm) fit up 91 cm stairs?
Expert analysis
A fridge measuring 36 in × 34 in × 70 in does not fit up stairs, but it's about 6 in too large at the tightest point. One caveat: item is rigid and cannot be compressed, bent, or disassembled.
- Binding axis
- Stair width
- Tightest clearance
- 6 in over
- Orientations checked
- 6
- Result
- Stair width exceeds the opening
It exceeds the opening at the tightest point.
Your fridge will not fit through the stairway — and it is clearly over the limit at the tightest point.
Handling: The item exceeds the space in every orientation — standard entry won't work.
| Orientation | Width | Height | Result |
|---|---|---|---|
| upright front-first | — | — | ✕ |
| upright side-first | — | — | ✕ |
| on side, front-first | — | — | ✕ |
| on side, side-first | — | — | ✕ |
| laid flat, depth across | — | — | ✕ |
| laid flat, height across | — | — | ✕ |
How the stair-passage check works
Stairs care about ceiling clearance on the incline plus stair-width clearance for the carrying motion; treat the item’s diagonal as the effective length.
- Use the standard residential stair geometry: 7 in rise per step, 11 in run, ~37° incline.
- Project the item’s diagonal across the incline to get the effective length the stairwell must clear.
- Apply the ceiling-clearance constraint to the carry pose (item tilted along the incline).
- Apply the stair-width constraint to the item’s narrow cross-section so movers can step alongside.
- Verdict ladder (verdict-tiers.js, shared with door): FITS ≥ 2 in; FITS_TIGHT 0.5–2 in; FITS_VERY_TIGHT 0–0.5 in; DOESN'T_FIT below.
Tread / rise / incline use ASTM-style residential averages (7 in rise, 11 in run, ~37° pitch); commercial stairwells differ.
Dimensions
- MEASUREDManeuver assumes one person carryingno grip width accounted for
- MEASUREDStairway handrails protrude a standard distance from the wall
- MEASUREDDetected refrigerator, sizemedium
- MEASUREDEstimated width, depth, height for fridge from local_db
- MEASUREDHandrail protrusion3" per side (5.9" total)
- MEASUREDStair slope~37° (7.5" rise / 10" run)
- MEASUREDTread nosing overhang1" reduces effective tread depth
Space geometry
- Standard residential rise/run (7"/11")
- Continuous handrail on at least one side
- Landing at the bottom matches the stair width
Handling
- ±¼ in tape-measure tolerance applied
- 1.5 in handling clearance subtracted from raw margins before the verdict
- Item treated as rigid — cannot compress, bend, or disassemble.
Why we make assumptions
ItemFits fills in anything you don’t measure yourself. Whenever you see [standard], the real value in your home may differ — measure it and message us in the chat below; we’ll re-run the math.
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