Pallet Calculator

Divide the pallet length by the case length to get cases per row, and the pallet width by the case width to get rows per layer. Multiply those to get cases per layer. Then divide the available stacking height (total height minus pallet deck height) by the case height to get the number of layers. Cases per layer times layers equals total cases per pallet. The optimizer automates this by testing every viable case orientation and pattern type to find the combination with the highest count.

The standard pallet in the United States is the GMA pallet (Grocery Manufacturers Association), measuring 48 inches long by 40 inches wide. It is used by roughly 30% of all pallets produced in North America and is the default for grocery, retail, and general distribution. The tool supports GMA, EUR (1200 mm × 800 mm, standard in Europe), and fully custom pallet dimensions.

Column stacking places all boxes in the same orientation on every layer — this maximizes vertical compression strength because the box corners (the strongest part) align directly. Interlocking rotates the box orientation 90 degrees on alternate layers, creating a brick-like pattern that resists lateral shifting but reduces compression strength by 40-50%. Use column stacking for heavy loads and interlocking for loads that need stability without banding.

It depends on your priority. Pinwheel stacking rotates cases within each layer to create a self-locking pattern with improved lateral interlock compared to column stacking. However, it does not replace proper unitization — stretch wrap, banding, or corner boards are still required based on load weight and transport conditions. Pinwheel typically fits fewer cases per layer than column stacking and significantly reduces vertical compression strength because corners no longer align. Use pinwheel when interlock and stability are the primary concern (e.g., tall, lightweight loads). Use column when compression strength and case count matter most (e.g., heavy products, short supply chains).

The tool supports GMA standard pallets (48" × 40", the most common in North America), EUR pallets (1200 mm × 800 mm, standard in Europe), and fully custom pallet dimensions. You can also specify the pallet height and weight limits to match your specific logistics requirements.

Standard dry van trailers have an interior height of approximately 110 inches, but the practical limit for palletized loads is typically 100-102 inches total (pallet deck plus product). This accounts for clearance, load bars, and stacking tolerances. Warehouse racking may impose lower limits — 96 inches is common for standard selective rack. Always check your specific trailer and racking specifications.

Both. The best pallet configuration maximizes case count while maintaining a stable load that can survive transport without damage. If maximizing count requires interlocking (which reduces compression strength by 40-50%) or creates a tall, narrow load with a high center of gravity, the higher count may cause more damage cost than it saves in freight. Use this tool to find the count, then validate compression with the Box Strength Calculator and stability with the Load Stability Calculator.

Column stacking preserves the full rated compression strength because box corners align vertically and carry the load directly. Interlocking reduces effective compression strength by 40-50% because the load path shifts from corner-to-corner to edge-to-face. Overhang reduces strength by up to 32% because the overhanging portion is unsupported. These factors compound — an interlocked pattern with overhang can reduce effective strength by more than 60% compared to a flush column stack.

A standard 53-foot dry van trailer fits 26 to 30 GMA pallets (48" × 40") depending on the floor arrangement — 26 in a turned layout (40" side facing the trailer wall) or up to 30 in a straight double-row layout (48" side facing the wall). A 48-foot trailer fits 24 to 28. Actual capacity depends on trailer interior dimensions and door clearance. For EUR pallets (1200 mm × 800 mm), a 13.6-meter European trailer fits up to 33 pallets. The Pallet Calculator focuses on the per-pallet arrangement; multiply cases per pallet by pallets per truck to get your total shipment quantity.

A footprint utilization of 90% or higher is considered good — it means the cases cover at least 90% of the pallet surface area. Between 85-90% is acceptable but leaves room for improvement. Below 85% suggests the case dimensions are a poor fit for the pallet size, and you may want to adjust case dimensions, try a different pallet size, or consider mixed-SKU palletization. Cube utilization (which factors in height) should also be evaluated — a 95% footprint utilization with only 60% height utilization wastes trailer cube.

Pallet overhang occurs when boxes extend beyond the pallet edge. Most retailers and warehouses require zero overhang or limit it to 1 inch per side. Overhang reduces effective compression strength by up to 32% because the overhanging portion of the box is unsupported. It causes problems in racking (boxes can be damaged by rack uprights), during transport (overhanging product shifts and sustains more damage), and in automated systems (conveyors and AS/RS systems require precise pallet dimensions). The tool flags overhang and can constrain solutions to zero-overhang configurations.

Cube utilization is the percentage of the available pallet volume (footprint area × available height) that is actually occupied by cases. It combines footprint utilization with height utilization: (total case volume / available pallet volume) × 100. A load with 95% footprint utilization but only 50% height utilization has a cube utilization around 47%. The tool shows both per-layer footprint utilization and overall metrics so you can identify whether the inefficiency is in the layer arrangement or the height usage.

The best pattern depends on your product weight, stack height, and transport conditions. Column stacking is best for heavy products because it preserves full compression strength through corner-to-corner alignment. Interlocking is best for tall, lightweight loads that need lateral stability — the brick-like bond prevents layer shifting during transport. Pinwheel provides maximum self-locking interlock within each layer but fits fewer cases. Hybrid patterns (column on the bottom, interlocking on top) give the best balance for most applications. The calculator evaluates all pattern types and shows case count, utilization, and stability trade-offs so you can pick the right one for your specific scenario.

Freight density is the total shipment weight divided by the total cubic volume, expressed in pounds per cubic foot (PCF). For a single pallet: take the total weight (cases × case weight + pallet weight) and divide by the cubic volume (pallet length × pallet width × total height, converted to cubic feet). For example, a GMA pallet loaded to 96 inches tall weighing 1,800 lb occupies 48 × 40 × 96 / 1,728 = 106.7 cubic feet, giving a density of 1,800 / 106.7 = 16.9 PCF. Higher density generally means a lower NMFC freight class and lower LTL shipping rates. The calculator shows utilization metrics that directly connect to freight density — improving cube utilization concentrates more weight into the same volume, pushing your density up and potentially lowering your freight class.