Will a door (73x31x183 cm) fit through a 91 cm door?
Expert analysis
A door measuring 29 in × 12 in × 72 in fits through a door, with about 1 ft 10.5 in to spare at the tightest point. The binding dimension is width: in its best-fitting orientation, the width is what comes closest to the limit, and it still clears. We checked every orientation and confirmed at least one places the door fully inside without compression or disassembly. That margin already subtracts a 1.5 in handling allowance, so it reflects a realistic load rather than a paper-thin theoretical fit. One caveat: applied practical clearance for handling (see tolerance buffer above).
- Binding axis
- Width
- Tightest clearance
- 2 ft clear
- Orientations checked
- 6
- Result
- Every axis clears
It fits with clearance on every axis.
- Every axis clears the opening — width is the tightest.
- Checked all 6 orientations — at least one fits cleanly.
- A 1.5 in handling allowance is already subtracted.
- No tilting or compression needed.
| Orientation | Width | Height | Result | Note |
|---|---|---|---|---|
| ✓ chosen30.5×73 cm (laid flat) | 60.9 cm | 130.2 cm | ✓ | |
| 30.5×182.9 cm (sideways) | 60.9 cm | 20.3 cm | ✓ | |
| 73×182.9 cm (front/back) | 18.4 cm | 20.3 cm | ✓ | |
| 73×30.5 cm (laid flat) | 18.4 cm | 172.7 cm | ✓ | |
| 182.9×73 cm (front/back) | -91.5 cm | 130.2 cm | ✕ | Too wide |
| 182.9×30.5 cm (sideways) | -91.5 cm | 172.7 cm | ✕ | Too wide |
Margins shown are calculated; allow ±¼ in for tape-measure precision.
How the door-passage check works
A door is a 2D opening — width and height matter; depth (path length through the doorway) doesn’t.
- Generate all 6 dimension permutations of the item (3 axes × 2 flips).
- For each permutation, apply the door constraint: item_width ≤ door_width AND item_height ≤ door_height.
- Subtract 1.5 in handling clearance from each axis to leave room for human movement.
- Pick the permutation with the largest minimum-axis margin — that’s the orientation a mover would choose.
- Verdict ladder (verdict-tiers.js): FITS if margin ≥ 2 in; FITS_TIGHT if 0.5–2 in; FITS_VERY_TIGHT if 0–0.5 in; DOESN'T_FIT below.
Tolerance ±¼ in (6 mm) is applied implicitly (band promotion to FITS_VERY_TIGHT) — see the note below the orientation matrix.
Dimensions
- MEASUREDReal-world factors (trim, baseboards, hardware) may reduce available clearance.
- MEASUREDUsing wide door dimensions36"×80" (914×2032mm)
- MEASUREDDoor fit is determined by the smallest cross-section (depth × height), not length
- MEASUREDApplied 38mm practical clearance for handling
Space geometry
- Square corners and a flat floor
- No trim, fixtures, or hardware protruding into the opening
- Door swings fully open (90°+) and stays open during passage
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.
Other assumptions
- User provided length (29"). Using Standard bookshelf (36"×12"×72") typical depth (12") and height (72") for door-fit analysis
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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