How many gaylords fit on a truck?
How many gaylords fit on a truck is arithmetic: divide the trailer's inside length and width by the box footprint, round down, and multiply by the layers the height allows.
The method
- Measure the inside length, width and height of your trailer. Do not use catalog numbers; trailers vary.
- Divide the inside length by the box length, and the inside width by the box width. Round each down.
- Multiply the two results: that is the boxes on the floor.
- Divide the inside height by the set-up box height, round down: that is the layers.
- Multiply floor boxes by layers.
Try both orientations, 48 inches along the trailer and 40 inches along it, and keep the better answer. Then allow for door space, loading gear and anything that cannot be stacked.
A worked example with made-up dimensions
These dimensions are an example to show the steps, not a statement about any trailer. Suppose a trailer is 630 inches long, 98 inches wide and 108 inches high inside, and the boxes are 48 x 40 x 36.
With the 48 inch side across the width: 98 divided by 48 is 2.04, so 2 across. 630 divided by 40 is 15.75, so 15 along. That is 30 boxes on the floor. With the 40 inch side across: 98 divided by 40 is 2.45, so 2 across; 630 divided by 48 is 13.1, so 13 along. That is 26. The first orientation wins.
Layers: 108 divided by 36 is exactly 3. Three layers of 30 is 90 boxes, set up, if the bottom boxes can carry two above them and the load is light enough. Weight, not space, usually limits that first.
Flat is a different arithmetic
A knocked-down box lies flat, a few inches thick. Instead of dividing the height by the set-up height, divide it by the thickness of a flat stack, and the count rises to hundreds. That is why most used gaylords travel knocked down, and why a trailer of flats is not comparable to a trailer of set-up boxes.
Ask your sellers how many flats make an inch. Then count the pallets of flats, not the boxes. See folding and knocking down.
Weight limits the load before space does
| Limit | What to check |
|---|---|
| Axle and gross weight | Loaded weight of the stack against the trailer's rating |
| Stacking rating | The box's rating for load on top |
| Humidity | Damp air weakens board; see the weight capacity guide |
| Door height | Stack must clear the door header |
| Pallet overhang | Overhang reduces strength |
Light loads fill by volume. Heavy loads fill by weight, and a heavy load in set-up boxes may fill a trailer a third full.
Why the count on a quote can be wrong
A quote that says forty boxes to a truck assumes a particular box, a particular trailer and a particular stacking height. Change any one and the count moves. A taller box loses a layer under the roof. A trailer with wheel wells loses floor width. A heavy load hits the weight limit before it fills the space. Ask what each assumption was, and the number becomes something you can check.
A checklist before you ask for a truck
- Inside length, width and door height of the trailer you will use.
- Box footprint and set-up height, or flat thickness.
- Weight of one loaded box, from a floor scale.
- Whether the boxes can be stacked and how many high.
- Dock height and whether the truck needs a liftgate.
Questions people ask
How many gaylords fit on a truck?
Work it from your trailer's inside length, width and height and the box footprint; the guide shows the steps.
How many fit flat?
Many times more; count by pallets of flats.
Does the stack have a limit?
Yes: the box's stacking rating, the trailer rating and the roof.
Sources
- Corrugated and humidity, Paper Index academy, last reviewed November 11, 2026
- AICC: corrugated and cold or humid storage, last reviewed November 11, 2026