Volumetric Weight

Volumetric weight (also called dimensional weight) is how carriers charge for the space your package takes up, not just how heavy it is. Light, bulky items cost more based on size rather than weight.

The Calculation

Volumetric Weight = (L × W × H) ÷ DIM Factor

DIM factors vary by carrier:

• Parcel carriers: 139 (domestic), 166 (international)
• Air freight: 166 typically
• Ocean: 1 CBM = 1 metric ton

Example

Box: 20" × 16" × 12" = 3,840 cubic inches Volumetric weight: 3,840 ÷ 139 = 27.6 lbs Actual weight: 8 lbs Billable weight: 28 lbs (rounded up)

Why Volumetric Pricing Exists

• Trucks and planes have space limits
• Light items fill space without paying their share
• Carriers optimize revenue per cubic foot
• Encourages efficient packaging

Reducing Volumetric Charges

• Use smaller boxes
• Eliminate empty space
• Compress soft goods
• Remove excess packaging
• Consider poly mailers for soft items

When It Applies

Volumetric weight applies when:

• Volumetric > actual weight
• Package exceeds certain dimensions
• Carrier uses DIM pricing (most do now)

Most carriers now apply DIM to all packages, not just oversize ones.