FedEx Dimensional Weight Formula:
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Dimensional weight (also called DIM weight) is a pricing technique for commercial freight transport that uses an estimated weight calculated from the length, width and height of a package. FedEx uses this calculation to account for lightweight packages that take up significant space in their vehicles.
The calculator uses the FedEx dimensional weight formula:
Where:
Explanation: The formula calculates the density-based weight that FedEx uses to determine shipping charges, especially for lightweight but bulky packages.
Details: Understanding dimensional weight helps businesses accurately estimate shipping costs, optimize packaging to reduce expenses, and avoid unexpected charges from carriers.
Tips: Measure your package at its longest points in inches. Enter all three dimensions accurately. The calculator will determine which weight (actual vs dimensional) FedEx will use for pricing.
Q1: Why does FedEx use dimensional weight?
A: FedEx uses dimensional weight pricing to account for the space a package occupies in relation to its actual weight, ensuring fair pricing for lightweight but bulky items.
Q2: How do I measure package dimensions correctly?
A: Measure to the nearest inch at the package's longest points. Round up each measurement to the next whole inch.
Q3: What's the difference between actual weight and dimensional weight?
A: FedEx charges based on whichever weight is greater - the actual scale weight or the calculated dimensional weight.
Q4: Does the dimensional factor change for international shipments?
A: Yes, international shipments typically use a different divisor (often 166 for international shipments instead of 139).
Q5: How can I reduce my dimensional weight charges?
A: Use smaller boxes, compress contents when possible, and choose packaging that closely fits your items without excess space.