Ocean vs. Domestic: The Metric Gap
For global freight forwarders and import/export compliance officers, the transition from international ocean freight to US domestic LTL (Less-Than-Truckload) is often a "math headache." International ocean freight markets operate almost exclusively on CBM (Cubic Meters). However, once that freight hits a US port and is deconsolidated for LTL transport, the metric system disappears. The US domestic market runs strictly on PCF (Pounds per Cubic Foot) and NMFC freight classes.
Global CBM Baseline
1 Cubic Meter (CBM) is approximately equal to 35.314 Cubic Feet. In international shipping, the "W/M" (Weight or Measure) rule determines your rate based on the higher of the two.
Domestic PCF Defense
US LTL carriers use density (PCF) to assign freight classes (50 to 500). If you don't convert your CBM correctly to Cubic Feet before calculating PCF, your freight class will be wrong, leading to massive re-billings.
Why Precise Conversion Matters
When a shipment arrives at a US cross-dock, carriers use automated dimensioners that record the extreme length, width, and height in inches. If you declared your shipment on a Bill of Lading (BOL) using a "rough" conversion from CBM, you are inviting an audit. A discrepancy of just 0.5 PCF can trigger a shift from Class 70 to Class 85, which in the US intermodal market can increase your inland freight costs by 20-30%.
Intermodal Conversion Checklist
- Gross Weight Clarity: Ocean freight often lists kilograms. Always convert to pounds (kg x 2.20462) before calculating PCF.
- Cubic Feet Calculation: Multiply your total CBM by 35.314 to find your domestic LTL volume foundation.
- Final Density Verification: Use our calculator to convert your final L/W/H in inches directly to PCF for your NMFC declaration.
Convert CBM to Domestic PCF
Entering the US market? Don't let the metric-to-imperial shift cost you. Enter your dimensions in inches below to get your official NMFC freight class.
Calculate Domestic Density ⟶