Cost Management
Dimensional Weight Pricing
Definition
A shipping pricing method that charges based on package volume rather than actual weight, often resulting in higher costs for bulky, lightweight products.
By Herzel MishelFounder, AgentisLast reviewed
Dimensional weight (DIM weight) pricing is a shipping industry standard where carriers charge based on the greater of actual weight or calculated dimensional weight (length × width × height ÷ DIM factor). For ecommerce merchants selling bulky but lightweight products — pillows, home goods, apparel in large boxes — DIM weight pricing can dramatically increase shipping costs beyond what simple weight-based calculations suggest. This pricing method is used by all major carriers (UPS, FedEx, USPS) and can add 20–40% to expected shipping costs. When not accounted for in profit floor calculations, DIM weight creates a hidden source of margin erosion.
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Related Terms
Cost Management
Landed Cost
The total cost of a product delivered to the customer, including COGS, freight, duties, tariffs, insurance, and handling fees.
Margin Analysis
Checkout Margin Erosion
The gradual loss of profit margin at checkout caused by unmonitored discount stacking, freight cost miscalculation, FX fluctuations, and stale COGS data.
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