How many boxes fit on a pallet?
Boxes per pallet is one of the most useful numbers in shipping. It drives freight cost, warehouse space and how many pallets an order needs. It comes down to three questions: how many boxes fit on one layer, how many layers fit under the height limit, and whether weight limits cut that down.
Step 1: Boxes per layer
Divide the pallet length by the box length and the pallet width by the box width, round both down, and multiply. Then try it with the box turned 90° and keep the higher number.
On a 48 × 40 inch pallet with 16 × 12 inch boxes: 48 ÷ 16 = 3 and 40 ÷ 12 = 3 (rounded down), so 9 boxes. Turned: 48 ÷ 12 = 4 and 40 ÷ 16 = 2, so 8. The first orientation wins with 9 per layer.
Step 2: Number of layers
Subtract the pallet's own height (about 5½ inches for a standard wood pallet) from the maximum load height, then divide by the box height and round down. With a 60 inch limit and 10 inch boxes: (60 − 5.5) ÷ 10 = 5.45, so 5 layers.
Step 3: Total and weight check
9 boxes × 5 layers = 45 boxes. If each weighs 20 lb, that's 900 lb plus the pallet, comfortably inside a typical limit. With heavier boxes, the weight limit may come first.
Height limits
There's no single standard. Many carriers and warehouses work with 60 to 72 inches including the pallet, and customers or retailers may set their own. Racking and trailer height also matter, especially if you want to double stack in a trailer.
Column stacking vs interlocking
Column stacking puts each box directly on top of the one below, corners aligned. It's the strongest arrangement because box walls carry the load. Interlocking alternates the pattern each layer, like bricks, which makes the load more stable but can cut compression strength by a large margin. Many shippers column stack and rely on stretch wrap for stability.
Avoid overhang
Boxes hanging over the pallet edge lose much of their strength because their walls aren't supported, and overhang increases the pallet's measured size for freight. Underhang wastes space. Aim to fill the deck closely without going past the edges.
Improving the count
If deck coverage is poor, small changes to box size can make a big difference. On a 48 × 40 pallet, boxes that divide evenly into 48 and 40 (like 12 × 10, 16 × 10 or 24 × 20) leave almost no gap. Designing box sizes around the pallet is one of the easiest ways to cut freight costs.