How to use this calculator
Measure usable width between supports, height beneath the next shelf and depth from front to back. Enter the box’s outside measurements, including lids and protrusions.
Formula and assumptions
Minimum of all tested clearances
Subtract the item dimension and twice the allowance from each matching opening or interior dimension. An orientation clears only when every remainder is zero or positive. Choose the orientation with the largest minimum remainder.
A door-only result checks a cross section, not the travel length. Interior tools also check item depth. For a door plus interior, the same orientation must satisfy every dimension.
Worked example
A 40 × 30 × 25 cm box in a 45 × 35 × 30 cm shelf space leaves 3 cm on every dimension after a 1 cm allowance per edge. It fits upright front first.
Before you move
This tool checks occupancy in the shelf space, not insertion through a smaller access opening. It does not assess shelf strength or load capacity. Leave practical room to grasp and remove the box.
A fit estimate is not a route simulation. It does not account for corners, stairs, lifting room, weight limits or diagonal maneuvers.
Frequently asked questions
Can I squeeze it through diagonally?
This tool only tests axis-aligned straight positions. A failed check does not prove a diagonal maneuver is impossible. Ask your mover to assess the actual item and route.
What does clearance per edge mean?
A 1 cm allowance removes 2 cm from each opening dimension: one allowance at each edge. The displayed remainder is extra space after that allowance.
Are these dimensions product specifications?
No. Default dimensions are illustrative examples. Measure the actual item, including fixed handles, feet and packaging.
Rectangular straight-pass estimates only. Check the entire route and confirm difficult moves with a professional.