Dim Calculator

Learn about Dimensional Weight

If your package has a large size-to-weight ratio, you may need to consider your package's dimensional weight when you calculate your shipping rates.

Determining which weight to use in calculating your rate requires that you determine if DIM weight becomes the chargeable weight. Different rules apply depending on the service selected. Dimensional weight considers density, which is the amount of space a package occupies in relation to its actual weight, to determine billable weight. Calculations of dimensional weight are based on the International Air Transport Association (IATA) volumetric standards (subject to change without notice).

Domestic Dim Factor: 194
International Dim Factor: 166
Ground Dim factors may vary depending on product

Packages that exceed PLC weight and size limits are not accepted for transportation. If found in the PLC system, they are subject to an Over Maximum Limits charge.


Enter the quantity, length, width and height for each box size
Qty Length Width Height Dim. Weight
in. in. in. lbs
in. in. in. lbs
in. in. in. lbs
in. in. in. lbs
in. in. in. lbs
in. in. in. lbs

How To Measure the Cubic Size of Your Package

Calculate the cubic size of your package by multiplying the height in inches, by the length in inches by the width in inches. Round up any fraction measurement to the nearest whole inch. The resulting total is the cubic size of your package. To calculate cubic feet, take the resulting total of L x W x H and divide it by 1728.


Large Package Conditions

Service may vary when lift is not available for a given consignment due to carrier weight restrictions, carrier density restrictions, cargo door size, kind of aircraft or truck available, handling equipment, specific carrier regulations or carrier flight schedules.

The shipper must call PLC to arrange service for shipments with any individual piece that exceeds 120 inches in length, width, and height combined or where any one dimension exceeds 55 inches.


Calculating Dimensional Weight for Domestic Shipments

  1. If you have more than one package to be shipped, consider each package a separate shipment for weight calculation purposes.
  2. Group like-size packages before making your calculation.

    Example: 30 cartons of 29" x 17" x 15" = 221,850 cubic inches divided by 194 = 1144 lbs. of chargeable weight. The greater of two weights apply between tender weight and dimensional weight.

Determine Billable Weight: Compare each package’s actual weight to its dimensional weight. The larger of the two weights is the billable weight and should be used to calculate the rate.

Individual tariff notes within a contract may supersede any of the aforementioned.

Dimensional Conversion Chart

To Convert From Multiply By To Get
Inches 25.4 Millimeters
Inches 2.54 Centimeters
Feet 0.03048 Meters
Yards 0.09144 Meters
Square inches 645.2 Square millimeters
Square inches 6.452 Square centimeters
Square feet 0.0929 Square meters
Square yards 0.8361 Square meters
Ounces (avdp) 28.35 Grams
Troy ounces 31.1 Grams
Pounds (avdp) 0.4536 Kilograms
Short tons 0.9071 Metric tons
Long tons 1.016 Metric tons
Fluid ounces 29.57 Millimeters
Quarts 0.9464 Liters
Gallons 3.785 Liters
Bushels 35.24 Liters
Cubic feet 0.02832 Cubic meters
Cubic yards 0.7646 Cubic meters
Ounces per square yard 33.91 Grams per square meter
To Convert From Multiply By To Get
Millimeters 0.03937 Inches
Centimeters 0.3937 Inches
Meters 3.281 Feet
Meters 1.094 Yards
Square millimeters 0.01552 Square inches
Square centimeters 0.1552 Square inches
Square meters 10.76 Square feet
Square meters 1.195 Square yards
Grams 0.03527 Ounces (avdp)
Grams 0.03215 Troy ounces
Kilograms 2.205 Pounds (avdp)
Metric tons 1.102 Short tons
Metric tons 0.9842 Long tons
Millimeters 0.03381 Fluid ounces
Liters 1.057 Quarts
Liters 0.2642 Gallons
Liters 0.02838 Bushels
Cubic meters 35.31 Cubic feet
Cubic meters 1.308 Cubic yards
Grams per square meter 0.0295 Ounces per square yard