Dimensional Weight Formula:
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Dimensional weight (also called volumetric weight) is a pricing technique for commercial freight transport that uses the volume of a package rather than its actual weight. Carriers use dimensional weight to calculate shipping costs for lightweight but bulky packages.
The calculator uses the dimensional weight formula:
Where:
Explanation: The dimensional factor (166) represents the cubic inches per pound that carriers use to calculate dimensional weight for domestic shipments.
Details: Accurate dimensional weight calculation is crucial for estimating shipping costs, optimizing packaging, and avoiding unexpected charges from carriers. Carriers charge based on whichever is greater - actual weight or dimensional weight.
Tips: Enter package dimensions in inches. Measure to the nearest 1/100th of an inch for accuracy. All values must be positive numbers greater than zero.
Q1: Why is dimensional weight used?
A: Dimensional weight pricing ensures carriers are fairly compensated for the space a package occupies in their vehicles, not just its weight.
Q2: Is the dimensional factor always 166?
A: For domestic shipments within the US, 166 is standard. International shipments may use different factors (139 for international, 194 for retail rates).
Q3: How do I measure package dimensions correctly?
A: Measure to the farthest points - length is the longest side, width is the second longest, and height is the remaining side. Round up to the nearest whole inch.
Q4: What's the difference between actual weight and dimensional weight?
A: Actual weight is what the package weighs on a scale. Dimensional weight is calculated from package volume. Carriers charge based on whichever is greater.
Q5: Can I reduce dimensional weight costs?
A: Yes, by using smaller boxes, eliminating empty space, and choosing packaging materials that minimize exterior dimensions while protecting contents.