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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. Airlines charge based on whichever is greater - the actual weight or the dimensional weight.
The calculator uses the dimensional weight formula:
Where:
Explanation: The formula calculates the volume of the package and divides by the dimensional factor to determine the equivalent weight that airlines will use for pricing.
Details: Calculating dimensional weight is crucial for accurate shipping cost estimation. Airlines charge based on the greater of actual weight or dimensional weight, so understanding this calculation helps avoid unexpected shipping costs.
Tips: Enter package dimensions in inches. Measure the outer dimensions at the longest points. All values must be positive numbers. The result is in pounds (lbs).
Q1: Why is the dimensional factor 166?
A: The factor 166 is standard for air freight and represents the volume (in cubic inches) that equals 1 pound for pricing purposes.
Q2: What if my package is irregularly shaped?
A: For irregular shapes, use the measurements at the longest points in each dimension to calculate the rectangular volume that would contain the item.
Q3: Do all carriers use the same dimensional factor?
A: No, different carriers may use different factors. The 166 factor is standard for air freight, but ground carriers may use 139 or other values.
Q4: How does dimensional weight affect shipping costs?
A: Carriers charge based on the greater of actual weight or dimensional weight. Light but bulky items often cost more due to dimensional weight pricing.
Q5: Can I reduce dimensional weight?
A: Yes, by using smaller packaging, compressing items when possible, or choosing more compact packaging materials to reduce the overall volume.