This freight linear feet calculator finds how much trailer floor space your pallets need. LTL carriers use that number to price your shipment — more floor space means a higher rate. The tool handles standard 48-inch pallets and mixed loads with stackable and non-stackable freight. Shippers, brokers, and warehouse teams use it to get a solid number before requesting an LTL quote. Enter pallet count, dimensions, and stack type to see your linear feet.
From pallets to linear feet, and the rules that reprice them
Every estimate here runs one rule LTL carriers use to gauge trailer floor: pallets 48 wide or less pair two across, so the row count is the pallet total halved and rounded up — ceil(pallets ÷ 2) — and the linear feet are those rows times the pallet length, divided by 12 and rounded up to the next whole foot. Ten standard 48-by-40-inch pallets that cannot stack pair into ceil(10 ÷ 2) = 5 rows, and 5 × 48 ÷ 12 = 20 — right at the size where a carrier's linear-foot or capacity rule can reprice the load. The table and sections below are that same rule applied to real pallet counts, stack levels, widths, and density.
Marking freight stackable divides the ground count and cuts linear feet, but the saving is real only when the carrier accepts the freight as stackable. Since a 2021 industry change several carriers rate capacity by handling units or floor spots, so a stackable claim that arrives non-stackable can be re-rated to the full floor count.
Pallets 48 wide or narrower sit two across the trailer and share one length of floor; anything wider is counted single file. The check uses a conservative 96-inch planning width, though real dry-van interiors run about 98 to 100 .
There is no universal linear-foot trigger. The commonly cited figure is 12 (often paired with a 750-cubic-foot rule), but tariffs vary: some start near 10, and Old Dominion rates a full trailer at 20 or 20,000 (Item 390). Confirm the number in your carrier's rules tariff.
Example: confirming freight as stackable
- A distributor books ten identical 48-by-40-inch pallets of machine parts on one LTL bill.
- Left non-stackable, they pair two across into ceil(10 ÷ 2) = 5 rows, and 5 × 48 ÷ 12 = 20 linear feet — enough to trip most carriers' capacity rules.
- The parts can safely double-stack, so the shipper marks the freight double stackable: the tool divides the ground count first, ceil(10 ÷ 2) = 5 ground pallets, which pair into ceil(5 ÷ 2) = 3 rows, and 3 × 48 ÷ 12 = 12 linear feet.
- Confirming the load as stackable cut the booking from 20 to 12 linear feet — but only because the carrier accepted the claim.
- If the freight arrives non-stackable, the carrier can re-rate it back to the 20-foot floor count.
Linear feet by pallet count
Every cell below comes straight from this calculator for standard 48-by-40-inch pallets at the conservative 96-inch planning width, so the chart and the tool always agree. The non-stackable column is the pair-and-round rule; the double-stacked column divides the ground count first. Watch the sixth pallet: six standard pallets fill 12 linear feet, the figure most carriers cite as the point where linear-foot pricing can kick in.
| Pallets (48 × 40 ) | Linear feet, non-stackable | Linear feet, double-stacked |
|---|---|---|
| 2 | 4 | 4 |
| 4 | 8 | 4 |
| 6 | 12 | 8 |
| 8 | 16 | 8 |
| 10 | 20 | 12 |
| 12 | 24 | 12 |
Two pallets share each 4-foot length because a 40-inch-wide pallet leaves room for a beside it, so the count climbs by 4 for every two pallets, not every one. Double-stacking, where the freight and the carrier both allow it, roughly halves the floor again.
Is 12 linear feet really the threshold?
A standard 53-foot dry van holds up to 53 of floor. Once a shipment takes a large share of it, carriers switch from standard LTL pricing to a linear-foot or capacity charge — but the trigger is set by each carrier's rules tariff, not by one industry number. The commonly cited convention is 12 linear feet, often paired with a 750-cubic-foot cubic-capacity rule, yet real tariffs vary widely: Old Dominion rates a shipment as a full trailer at 20 or 20,000 (Item 390), Dayton Freight re-rates loads above 15 when density is under 22.5 , and XPO applies its own Lineal Foot rule (Item 234). Some third-party calculators publish threshold tables that contradict the carriers' own tariffs, so treat any single number as a planning estimate and confirm the trigger with your carrier. This tool flags at a conservative 10 linear feet so you get an early warning well before the most aggressive tariff kicks in.
What about pallets wider than 48 inches?
The side-by-side saving depends entirely on width. Two pallets fit across the trailer only when each is 48 wide or less; the calculator checks that against a conservative 96-inch planning width, even though real dry-van interiors run about 98 to 100 — those extra inches are a safety margin, not usable pairing space. A pallet exactly 48 wide still pairs, with a few inches to spare. Anything wider goes single file: six non-stackable 60-by-60-inch machine bases cannot pair, so they hold six rows and 6 × 60 ÷ 12 = 30 linear feet — two and a half times the footprint of six standard pallets. When a load mixes widths, the narrow pallets pair among themselves and the wide ones stand alone, which is why a mixed shipment rarely divides cleanly in half.
When does density or cubic feet re-rate the load?
Linear feet are only one of the levers a carrier can pull; two others ride on volume. The cubic-capacity rule (commonly 750 ) can re-rate a light, bulky load even when its linear feet look fine, so a shipment that passes the floor check can still be billed on volume. And freight class is set by density: weight divided by total cubic feet, where cubic feet equal length × width × height in inches ÷ 1,728. Switch the tool to freight-class density mode and it maps that density to the current NMFC scale — the NMFTA 13-subprovision density scale under Docket 2025-1, effective July 19, 2025, which retired the old tier system and added classes 55 and 50, running from class 400 (under 1 ) down to class 50 (50 or more). Ten 48-by-40-by-50-inch pallets weighing 5,000 work out to about 9 , an estimated class 100. Density-only classification ignores stowability, handling, and liability, so the carrier's final class can still differ.
Mixed loads, and the limits of the estimate
Real LTL shipments are rarely one pallet size. In mixed-pallet mode the tool runs the same pair-and-round rule on each pallet type separately and sums the rows: ten 48-by-40-inch pallets (20 ) plus four 60-by-48-inch pallets (10 ) come to 30 linear feet across 14 pallets. That is deliberately conservative — it does not merge partial rows across types, mirroring a carrier that cannot perfectly interleave a mixed floor.
A few limits keep this an ordering estimate, not a bill of lading. Measure the loaded freight, not the bare pallet: overhang and tall product make the real footprint bigger than a 48-by-40 deck. The tool counts pallets wider than 48 single file rather than modeling three-across placement, and it does not size floor-loaded freight (cartons stacked straight on the trailer), cylindrical cargo like rolls or drums, or multi-stop loads that pick up and drop along the route. Above all it does not know your carrier's rules tariff — the linear-foot trigger, the cubic rule, and the density breaks are all contract terms. Use the number to plan and to challenge a quote, then confirm the repricing rules with the carrier before you book.
Frequently asked questions
How does a freight linear feet calculator work?
It counts the trailer floor your pallets consume. Pallets 48 wide or less are placed two-across a conservative 96-inch planning width, so the tool halves the row count for them; wider pallets go single file. It then multiplies the rows by the pallet length, converts to feet, and rounds up to the next whole foot. When the carrier accepts the freight as stackable, your stack level reduces the ground count first.
Does stacking pallets change the total linear feet of my shipment?
Yes, but only when the carrier accepts the freight as stackable. This tool divides the ground-level pallet count by your stack level, which cuts rows and linear feet — for example, 10 non-stackable 48x40 pallets need 20 , but double-stacked they drop to 12. The catch: since a 2021 industry change, several carriers rate capacity charges by handling units or floor spots, so freight booked as stackable that arrives non-stackable can be re-rated to the full floor-spot count.
How do you calculate linear feet for freight?
For standard pallets 48 wide or less, take the pallet count divided by 2 and round up to get the number of trailer rows, then multiply the rows by the pallet length in inches and divide by 12, rounding up to the next whole foot. Pallets wider than 48 cannot pair side by side, so they are counted single file and are not halved.
How much trailer space does 40 represent?
A standard 53-foot dry van has about 53 of floor, so 40 fills roughly 75 of it (40 divided by 53). At that size the load is usually too large to share efficiently, so carriers typically quote a volume LTL or truckload rate instead of standard LTL.
Is there one linear-foot threshold, or does it vary by carrier?
It varies. There is no single universal threshold — the commonly cited figure is 12 (often paired with a 750-cubic-foot cubic-capacity rule), but every carrier sets its own in its rules tariff. Old Dominion rates a shipment as a full trailer at 20 or 20,000 (Item 390), Dayton Freight re-rates above 15 when density is under 22.5 , and XPO applies its own Lineal Foot rule (Item 234). This tool flags at a conservative 10 as an early warning; always confirm the trigger in your carrier's tariff.