Dimensional Weight Calculator

Find billable shipping weight by comparing dimensional (volumetric) weight against actual weight, using your carrier's DIM factor.

Length (in)

Width (in)

Height (in)

Actual weight (lbs)

DIM factor (in³/lb)

Number of packages

Tab to move between fields

DIM weight (lbs)

21.76

Billable weight (lbs)

21.76

DIM billed? (1=yes)1

DIM surcharge (lbs)11.76

DIM surcharge %117.6

Cubic inches3,024

Cubic feet1.75

Density (lbs/cu ft)5.71

Total billable (all pkgs)21.76

How to Use This Calculator

Enter package outer dimensions: length, width, and height (inches or cm).
Enter actual package weight (lbs or kg) and select the carrier (UPS, FedEx, USPS, DHL).
Read dimensional weight (DIM weight) using the carrier's DIM factor.
The billable weight is the greater of actual weight and DIM weight — compare both.
Reduce DIM charges by right-sizing packaging to minimize empty air space.

How the result changes with DIM factor (in³/lb)

Length (in): Outer package length in inches.
Width (in): Outer package width in inches.
Height (in): Outer package height in inches.
Actual weight (lbs): Actual scale weight of the package.
DIM factor (in³/lb): Carrier DIM divisor in cubic inches per pound: 139 = UPS/FedEx domestic and international, 166 = USPS Priority Mail, 194–250 = regional carriers and LTL freight. Use your negotiated rate if you have one.
Number of packages: Total packages in the shipment.

DIM weight (lbs): Calculated dimensional weight = L x W x H / DIM factor.
Billable weight (lbs): The greater of DIM weight or actual weight — this is what you pay for.
DIM billed? (1=yes): 1 if DIM weight exceeds actual weight.
DIM surcharge (lbs): Extra weight you are billed for beyond actual weight.
DIM surcharge %: Percentage overage due to DIM pricing.
Cubic inches: Total cubic inches of the package.
Cubic feet: Volume in cubic feet.
Density (lbs/cu ft): Package density — important for freight class.
Total billable (all pkgs): Sum of billable weights for the full shipment.

Identify Input Parameters
4 parameters
Length (in) = 18, Width (in) = 14, Height (in) = 12, Actual weight (lbs) = 10 = 6 input(s) provided
Calculate DIM weight
DIM weight = cubicInches / dimFactor
21.76 = 21.76
Calculate Billable weight
Billable weight = max(dimWeight, actualWeight)
21.76 = 21.76
Calculate DIM billed?
1 = 1
Calculate DIM surcharge
11.76 = 11.76