Packaging·4 min read·Verified 2026-10-06

How to Measure Freight Accurately: Outermost Dimensions & Overhang

A practical measuring manual for warehouse staff and shippers explaining how automated carrier laser scanners evaluate package dimensions.

The Outermost Point Rule

Carriers measure freight using laser dimensioners that construct an imaginary rectangular box (bounding cuboid) around the outermost points of the shipment. Dimensions must be measured from extreme edge to extreme edge, including box flaps, bulges, handles, and pallet overhang.

Measuring Loaded Pallets

* Length and Width: Measure the widest point. If cartons hang over the pallet deck by 1 inch on each side, the measured width is pallet width + 2 inches. * Height: Measure from the warehouse floor to the highest peak of the cargo. Always include the thickness of the pallet deck (typically 4.75 to 5.5 inches).
Authoritative Basis

Standards & References

NMFTA (National Motor Freight Traffic Association)Verified: 2026-10-06

National Motor Freight Classification (NMFC) — density-based classification and the 13-sub density structure ↗

The 13 density-to-class bands used on this site match the structure published for density-based classification. Further commodity groups continue to be evaluated by NMFTA.

Major U.S. parcel carriers (UPS, FedEx, USPS)Verified: 2026-10-09

Published dimensional weight divisors — 139 in³/lb Daily Rates, 166 in³/lb Retail Rates, 5,000 cm³/kg Metric ↗

Standard published commercial daily divisor is 139 in³/lb; retail counter rates commonly publish 166 in³/lb. Metric international courier divisor is 5,000 cm³/kg.

Interactive Calculators

Calculate This Topic

Freight MeasurementFreight Density Calculator →Calculate shipment density in pounds per cubic foot (PCF) and kilograms per cubic meter (kg/m³).PackagingPackage Girth Calculator →Calculate package girth and combined Length + Girth against carrier parcel thresholds.Pallet PlanningPallet Loading & Stacking Calculator →Determine cartons per pallet, TI × HI stacking configurations, loaded height, gross weight, and visual layouts.
Further Reading

Related Guides

Freight Measurement5 min read
How to Calculate Freight Class →A practical step-by-step walkthrough showing how to measure freight, calculate cubic feet, determine density (PCF), and look up the estimated freight class.
Pallet Planning5 min read
TI × HI Pallet Patterns →A practical guide to pallet stacking geometry, explaining how tier count (TI) and height (HI) determine pallet load spatial arrangement, with key distinctions between geometry and structural safety.