Shipping Box Fit Checker
Enter your product size and the inside dimensions of your shipping box, and the fit checker tries all six rotations for you — padding included. You get a clear fits-or-not verdict, the friendliest orientation, leftover clearance, and, for multiples, how many units one box can hold.
Protective padding added on every side (e.g. bubble wrap). Usable interior = box dimension − 2 × padding.
Product dimensions
Box interior dimensions
Enter product and box dimensions, then check fit.
This is a dimensional check only. It does not guarantee a real-world pack: irregular shapes, fragile items, void fill and carrier packaging rules may require extra space.
How It Works
- 1
Choose inches or centimeters, then enter the product length, width and height. Add a quantity of identical items, or leave it at 1 for a single product.
- 2
Enter the box interior dimensions — the usable space inside the walls, not the outer size. Padding thickness per side is subtracted twice from every box dimension.
- 3
The checker tests all six axis-aligned rotations and picks the orientation with the most even leftover clearance — or, for quantities, the arrangement that holds the most items.
- 4
Read the verdict: fit status, best orientation, leftover clearance and grid capacity — or the exact dimension that is blocking the fit.
Example
- A product measures 12 × 4 × 3 in and the box interior is 14 × 6 × 4 in, with 0.5 in of bubble wrap per side.
- Padding reduces the usable interior to 13 × 5 × 3 in.
- The product fits in its natural orientation with 1 × 1 × 0 in of leftover clearance — the height sits exactly flush.
- Setting the quantity to 6 shows the aligned grid only holds 1 × 1 × 1, so a larger box is needed for multiples.
Accuracy & Limitations
- Quantities are estimated as identical items packed in an aligned grid, all with the same orientation. Mixed orientations, interlocking and irregular stacking (full 3D bin packing) are not modeled.
- This is a dimensional check, not a packing guarantee: irregular shapes, fragile items, void fill and carrier packaging rules may require extra space.
- The box dimensions must be interior measurements. Verify your box spec for the inside size — outer dimensions include wall thickness and will overstate the usable space.
- Rotation checking covers the six axis-aligned orientations only; diagonal placement is not considered.
- Padding is assumed to be uniform on every side, like bubble wrap or foam. Rigid inserts or corner protectors may reduce usable space unevenly.