The short answer
The standard North American pallet is 48 by 40 inches, the GMA pallet. The first number is always the stringer length, which is a defined convention rather than a habit.
That order decides how equipment can pick the pallet up, and that in turn decides whether a 53-foot trailer holds 26 pallets or 30. Load capacity is also three separate ratings, which is why published figures for the same pallet disagree so widely.
Every pallet size guide opens with the same answer: 48 by 40 inches. That answer is correct, and it leaves out almost everything that decides how a pallet actually behaves in a warehouse or a trailer.
The two numbers follow a fixed order for a reason. The order records which way the stringers run, and the stringers decide how forks and pallet jacks can enter, how the pallet sits in a trailer, and how many fit.
This reference covers the 48 by 40, the convention behind the dimension order, and what that order controls. It also covers why capacity figures contradict each other, and the international sizes that matter for export.
The 48 by 40 and Where It Came From
The industry calls the 48 by 40 inch pallet the GMA pallet, after the Grocery Manufacturers Association. The trade group standardized the footprint in the 1960s so grocery freight could move from manufacturer to retailer without anyone restacking it onto a different pallet at every handoff.
The association now operates as the Consumer Brands Association, and its footprint outlived its origins. Trailers, warehouse racking, retail backrooms and pallet pools across the United States are all built around it.
The same pallet goes by several names. GMA pallet, grocery pallet, stringer pallet and standard pallet usually mean the same 48 by 40 design, typically built with three stringers, seven top deckboards and five on the bottom.
Which Number Comes First
Pallet sizes state the stringer length first and the deckboard length second. A 48 by 40 pallet has 48-inch stringers and 40-inch top deckboards.
That order is a definition rather than a preference. Under ISO 6780, pallet length is the deck dimension in the direction of the stringers, and it is always stated first.
So a 40 by 48 pallet is not the same pallet turned around. It describes a different build, with 40-inch stringers and 48-inch deckboards, and it enters a trailer or a rack differently. Specifying the two numbers in the wrong order can deliver a pallet that fits the footprint and fails the handling.
What the Order Controls: Entry
Stringer pallets and block pallets handle differently, and the difference starts with how forks get underneath.
A stringer pallet rests on three long boards. Forks and pallet jacks can always enter from the two ends, running parallel to the stringers, which the trade calls two-way entry. Many stringer pallets also carry notches cut into the stringers, which let forklift tines pass through from the sides.
That makes a notched stringer pallet partially four-way, and the word partially matters. A forklift can enter from any side, but a pallet jack only from two. A pallet jack runs on load wheels that have to reach the floor between the bottom deckboards, and from the notched sides those boards are in the way.
A block pallet replaces the stringers with nine solid blocks. That gives true four-way entry for forks and pallet jacks alike, at the cost of more wood and more weight. The European pallet is a block design, while most domestic American freight rides on stringer pallets.
What the Order Controls: Trailer Count
This is where the dimension order stops being a technicality. A 53-foot dry van has an interior roughly 100 inches wide, which leaves room for two 48 by 40 pallets side by side whichever way they face.
Load them with the stringers running along the trailer and each row takes 48 inches of length. Load them turned, with the stringers running across, and each row takes only 40.
The same pallets and the same trailer. Turning them uses the full width and adds two rows.
Along the trailer, thirteen rows of two fit, for 26 pallets. Turned, fifteen rows of two fit, for 30. That is four more pallets on every load, which is roughly fifteen percent more freight for the same trailer and the same driver.
The catch is entry. Loading the turned layout from the rear door means the forks travel along the trailer while the stringers run across it, so the tines have to pass through the notches. A forklift can do that. A pallet jack cannot, which is why a dock that loads by pallet jack is usually stuck at 26.
Weight can cap a load before floor space does, and dense freight often hits the legal limit with room left over. For light, bulky freight, though, the orientation is often the whole difference between filling a trailer and shipping air.
Order the pallet the dock can handle. A notched stringer pallet earns its extra rows only where a forklift does the loading. Where pallet jacks do it, the four-way claim buys nothing.
Capacity Is Three Numbers, Not One
Look up the load capacity of a 48 by 40 pallet and the answers range from about 2,000 pounds to well over 7,500. The pallet did not change. What changed is which rating each source quoted, and whether it said so.
Pallets carry three distinct ratings. Static capacity is the load the pallet holds sitting still on a flat floor, fully supported underneath. Dynamic capacity is the load it holds while moving on a forklift or a pallet jack. Racked capacity is the load it holds when it spans rack beams with nothing supporting its middle.
The three are not close to one another. Static is the highest, because the floor carries most of the load. Dynamic is lower, because the pallet flexes under movement. Racked is usually the lowest, because the deck spans open air between two beams and bends under the weight.
Suppliers publish all three, and some list them side by side. Many guides quote a single figure without naming the rating, and some quote a static number where a racked one belongs.
That last mistake is the dangerous one. A pallet rated for a heavy static load can fail in a rack at a fraction of it, and racked failures happen overhead, where the consequences fall on people below. Before loading a pallet into racking, find its racked rating specifically.
Grade and species account for the rest of the spread. A new hardwood pallet rates higher than a recycled softwood one of the same footprint, so any capacity figure describes a particular pallet rather than the size.
Grades and What They Change
The same 48 by 40 footprint comes in several grades, and the grade moves both the price and the capacity. Grade A pallets are new or near new, with sound deckboards and few repairs. Grade B pallets are sound but used, often with a repaired stringer or replaced boards, and they sell for noticeably less.
Recycled and remanufactured pallets sit further down. A remanufactured pallet is rebuilt from salvaged parts, sometimes mixing boards of different thickness or species. That is perfectly serviceable for one-way shipping, and a poor choice for racking, where an uneven deck concentrates the load on the weakest board.
The practical rule is to match the grade to the most demanding use the pallet will see. A pallet that only ever sits on a trailer floor can be Grade B. One that will spend weeks in a rack should not be.
Overhang and Underhang
How the load sits on the deck matters as much as the pallet itself. Overhang means cartons extending past the pallet edge. It looks harmless and costs a great deal of carton strength, because the edges and corners of a box carry most of its stacking load.
A carton hanging past the deck loses support exactly where it is strongest, so the box above it presses down on an unsupported wall. Even a small overhang can cut a stack’s compression strength sharply, and it also exposes the carton to forks, dock doors and neighboring pallets.
Underhang, where the load stops short of the edge, wastes deck area and lets cartons shift. The target is a load that sits flush with the pallet edge on all four sides.
Overhang also matters for freight class, since the measurement follows the load rather than the deck. A pallet with cartons hanging past its edge occupies more trailer space than its own footprint, and it gets rated on the larger figure.
The Other North American Sizes
The 48 by 40 dominates, but several other footprints are standard in particular industries. The 42 by 42 suits drums, paint and chemicals, where a square deck carries round containers without overhang. The 48 by 48 carries larger drums and bulky industrial goods.
Automotive suppliers often use 48 by 45, and beverage distribution uses smaller footprints sized to its cases. None of these are errors. Each fits a load the 48 by 40 handles badly, and forcing that load onto a GMA footprint usually produces overhang, underhang, or both.
The Pallet Counts Toward the Weight
An empty wooden 48 by 40 typically weighs somewhere around 30 to 50 pounds and stands about five to six and a half inches tall. Those figures look trivial next to a full load, and they are not.
Both the weight and the height count in freight density, because density gets worked on the shipment exactly as tendered. Leaving the pallet out of the measurement makes freight look denser than it is, which produces a class that is too low and a reclassification charge when the carrier re-measures.
Plastic pallets range more widely in weight, from very light nestable designs to heavy rackable ones. The choice changes the tare weight on every shipment, which adds up across a year of freight.
The Six ISO Sizes
The International Organization for Standardization recognizes six pallet sizes under ISO 6780, chosen to cover the regional standards already in wide use.
| Size | Metric | Where it is common |
|---|---|---|
| 48 × 40 in | 1219 × 1016 mm | North America |
| 1200 × 800 mm | 1200 × 800 mm | Europe, the Euro pallet |
| 1200 × 1000 mm | 1200 × 1000 mm | Europe, Asia |
| 42 × 42 in | 1067 × 1067 mm | North America, Europe, Asia |
| 1100 × 1100 mm | 1100 × 1100 mm | Asia |
| 1140 × 1140 mm | 1140 × 1140 mm | Europe |
Square pallets resist tipping and suit drums and loads without an obvious long axis. The rectangular sizes favor the vehicles and containers of the regions that adopted them. So the footprint an exporter should choose depends on where the freight ends up, rather than where it starts. Matching the destination’s standard avoids a restack at the receiving dock.
The Euro Pallet
The European pallet, governed by the European Pallet Association, measures 1200 by 800 millimeters and stands 144 millimeters tall. Its specification is unusually precise: eleven boards, nine blocks and 78 nails, with the nail positions stipulated for diagonal rigidity.
That precision lets Euro pallets circulate through an exchange pool, where the receiver swaps a delivered pallet for an equivalent one rather than returning it. A pallet only earns a place in that pool if it matches the specification exactly.
For export, the footprint matters as much as the build. A Euro pallet and a 48 by 40 pallet fit shipping containers differently, and loading a container with the pallet its destination expects avoids restacking on arrival.
Wooden Pallets and Export
Wooden pallets crossing international borders fall under ISPM 15, the international phytosanitary standard for wood packaging. It requires treatment, usually heat treatment, to kill pests, plus a stamp on the pallet recording that treatment.
An untreated or unmarked wooden pallet can hold up a shipment at the border or force it back. Plastic and composite pallets sit outside the standard, which is one reason some exporters use them despite the higher cost.
Common Questions
What is the standard pallet size in the United States?
48 by 40 inches, known as the GMA pallet. The first number is the stringer length and the second is the deckboard length, which is the order ISO 6780 defines.
How many pallets fit in a 53-foot trailer?
Usually 26 with the stringers running along the trailer, or 30 with the pallets turned. The turned layout needs forks entering through the stringer notches, so it depends on loading by forklift rather than pallet jack.
How much weight can a 48 by 40 pallet hold?
It depends on the rating. Static capacity is the highest, dynamic is lower, and racked is usually the lowest. Grade and wood species move all three, so check the rating that matches how you will use the pallet.
What is the difference between two-way and four-way entry?
Two-way pallets admit forks only from the ends. Notched stringer pallets admit forklift tines from all four sides but pallet jacks from only two, while block pallets admit both from all four.
Choosing a Pallet
This reference has covered the origin of the 48 by 40, the convention behind the dimension order, and how that order controls both entry and trailer count. It has also covered why capacity figures contradict each other, the six ISO sizes, the Euro pallet, and the treatment rule for wooden pallets in export.
Specify the size in stringer-first order, match the entry to the equipment on the dock, and ask for the capacity rating that fits how you will use the pallet. A pallet described only by its footprint leaves the three questions that matter unanswered.
Key takeaways
- The standard North American pallet is 48 by 40 inches, with the stringer length always stated first under ISO 6780.
- Notched stringer pallets are only partially four-way: a forklift enters from any side, a pallet jack from only two.
- Turning 48 by 40 pallets in a 53-foot trailer raises the count from 26 to 30, but it needs a forklift at the door.
- Capacity is three ratings, static, dynamic and racked, and racked is usually the lowest and the one most often misquoted.
- Wooden pallets in international trade need ISPM 15 treatment and marking, while plastic pallets sit outside the rule.