Dimensional Weight Formula:
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Definition: Dimensional weight (also called volumetric weight) is a pricing technique for commercial freight transport that uses the package's volume rather than its actual weight.
Purpose: FedEx and other carriers use this calculation to account for lightweight packages that occupy significant space in their vehicles.
The calculator uses the formula:
Where:
Explanation: The formula calculates the cubic size of your package and converts it to an equivalent weight.
Details: FedEx will charge you based on whichever is greater - the actual weight or the dimensional weight. Calculating this helps estimate shipping costs accurately.
Tips: Measure your package at its longest point on each side (length, width, height) in inches. Round each measurement to the nearest whole number before calculating.
Q1: Why is the divisor 139?
A: 139 is FedEx's standard dimensional factor for domestic shipments (in inches). For international shipments, the divisor is typically 166.
Q2: How do I measure package dimensions?
A: Measure the longest point on each side - length is the longest side, width is the second longest, and height is the remaining dimension.
Q3: What if my package is irregularly shaped?
A: Measure as if the package were in a rectangular box that would completely contain it.
Q4: Does FedEx round up dimensional weight?
A: Yes, FedEx rounds up to the next whole pound for dimensional weight calculations.
Q5: When would actual weight be used instead?
A: FedEx will charge based on whichever is greater - the actual weight or the dimensional weight.