Will a headboard (211x10x163 cm) Fit Up 211 cm Stairs?

+0 in clearance

· ON THE WIDTH AXIS

It fits with clearance on every axis.

Your headboard will fit through the stairway, with a comfortable margin.

6 ft 11 in vs 6 ft 11 in

Clearance +0 in (+0.0%) on the WIDTH axis

AStair slope angle✓ PASS

\theta_{\text{slope}} = \operatorname{atan2}(\text{riser}, \text{tread})

↓ SUBSTITUTE

\operatorname{atan2}(7.5, 10)

Plain English: Slope of the stair run from riser-over-tread geometry.

BTilted carry envelope✓ PASS

h_{\text{eff}}(\theta) = \text{vert}\cos\theta + \text{along}\sin\theta

↓ SUBSTITUTE

4\cos(37^\circ) + 83\sin(37^\circ)

Plain English: Vertical envelope of a tilted item being carried up stairs.

CAxis inequality · stair width✓ PASS

d_{\text{item}} \;\le\; d_{\text{space}}

↓ SUBSTITUTE

64 \;\overset{?}{\le}\; 75.1\quad(\text{stair width})

↓ EVALUATE

64\,\text{in} \;\le\; 75.1\,\text{in} \;\Longrightarrow\; \Delta = +11.1\,\text{in}

Plain English: Along the stair width, the item is 64 in and the space allows 75.1 in — 11.1 in to spare.

D3D space diagonal✓ PASS

\mathcal{D}_{3D} = \sqrt{L^2 + W^2 + H^2}

↓ SUBSTITUTE

\sqrt{83^2 + 64^2 + 4^2}

↓ EVALUATE

104.9\,\text{in} \;\le\; 109.7\,\text{in} \;\Longrightarrow\; \Delta = +4.8\,\text{in}

Plain English: Corner to corner the item reaches 104.9 in — keep that swing room in mind for the turn after.

Orientation	Width	Height	Result
—	-8 in	2 ft 2.5 in	✕
—	5 ft 11 in	-21 in	✕
—	-8 in	3 ft 2.5 in	✕
—	11 in	2 ft 3 in	✓
—	5 ft 11 in	-25 in	✕
—	11 in	11 in	✓

Margins shown are calculated; allow ±¼ in for tape-measure precision.

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.

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Will a headboard (211x10x163 cm) fit up 211 cm stairs?

Expert analysis

It fits with clearance on every axis.

Dimensions

Space geometry

Handling

Similar calculations

Run your own fit check