/bx_user-circle.svg){kind=small}
Freightzy Linear Feet Calculator
What Are Linear Feet in Freight Shipping?
Linear feet in freight shipping measures the length of trailer floor space your shipment occupies, measured from front to back. A standard 53-foot dry van or reefer trailer is 53 linear feet long and 96 inches (8 feet) wide inside.
Your shipment’s linear footage tells the carrier how much of that floor length your freight uses, regardless of whether it fills the full
width.
Linear feet matters because LTL carriers sell trailer space to multiple shippers on every load. A shipment that takes up 12 linear feet of a 53-foot trailer is using roughly 23% of the available floor. If that shipment is light relative to the space it occupies, the carrier may apply linear foot pricing instead of standard class-based LTL rates - effectively converting your LTL shipment to a space-based charge.
This is one of the most common sources of invoice adjustments on larger LTL shipments, and the calculator above helps you see the risk before you commit.
The Linear Foot Rule in LTL Shipping
Most LTL carriers maintain a linear foot rule in their tariff that triggers when a shipment exceeds a specific number of linear feet - commonly 10, 12, or 16 feet depending on the carrier.
When the rule triggers, the carrier may switch your shipment from standard class-based LTL pricing to linear foot pricing (sometimes called spot or volume pricing), apply a per-linear-foot surcharge, or reclassify the shipment entirely. The threshold varies significantly by carrier and even by contract. Some carriers apply linear foot rules at 10 linear feet. Others allow up to 20 feet before the rule kicks in.
A few carriers have replaced linear foot rules with cubic capacity rules entirely. This variability is one of the strongest arguments for working with a freight broker who knows each carrier’s specific tariff - what works at 11 linear feet with one carrier may trigger a surcharge at 11 linear feet with another.
The financial impact can be substantial. A shipment quoted at standard LTL class rates might see its cost double or triple once linear foot pricing is applied. Checking your linear footage before booking - and routing to carriers whose thresholds your shipment can stay within - is the most effective way to avoid these charges.
How This Calculator Works
Freightzy’s linear feet calculator does more than simple length multiplication. It optimizes pallet arrangement based on how pallets actually fit on a trailer:
Standard Trailer Width - 96 inches (8 feet): The calculator uses the standard interior width of a dry van or reefer trailer as its constraint. Every pallet arrangement is calculated against this 96-inch width.
Pinwheeling (Side-by-Side Loading): If your pallets are 48 inches wide or less, two pallets fit side by side across the 96-inch trailer width. The calculator automatically detects this and places pallets two-abreast, cutting your linear footage roughly in half compared to single-file loading. This is called pinwheeling, and it’s the single most effective way to reduce linear feet on a standard pallet shipment.
Mixed Pallet Types: Use the “Add Another Pallet Type” button to enter different pallet dimensions within the same shipment. The calculator handles mixed profiles and optimizes the arrangement across all pallet types. Most competing linear feet calculators assume identical pallets - Freightzy handles real-world mixed-size shipments.
Results are rounded up to the next whole number. These are estimates - actual loading may vary based on carrier loading practices, equipment variations, and floor condition.
Other Freightzy Tools
Use our other freight tools alongside the cubic capacity calculator:
Shipping Quote Calculator - Get instant LTL, FTL, reefer, trade show, and final mile quotes.
Freight Class Calculator - Look up or calculate your NMFC freight class based on density.
Cubic Capacity Calculator - Check whether your freight fits on a standard trailer and calculate cubic utilization.
