How Product Dimensions and Weight Affect Logistics
Dimensions and weight are one of the main cost drivers on a marketplace: they determine your logistics, storage and inbound handling fees. Platforms often charge by volumetric (dimensional) weight — meaning a light but bulky product is billed as if it were heavy, because it takes up a lot of space. That is why two products at the same price can have completely different margins: an oversized one has its margin eaten up by logistics and storage.
In short: the bigger and heavier the product, the more expensive logistics and storage become. Charges are often based on volumetric weight — bulky and light is expensive too.
What the cost depends on
- Dimensions — length x width x height determine the volume and the warehouse space taken.
- Volumetric weight — the weight calculated from volume; the greater of actual and volumetric weight is used.
- Actual weight — affects delivery costs for heavy products.
- Category and warehouse — rates differ across platforms and warehouses.
How to manage it
- Calculate logistics and storage in your unit economics before you place the purchase order.
- Optimize the packaging — excess volume directly raises the rate. A line-by-line breakdown of the rate using Ozon as an example is in the guide on logistics costs.
- For oversized goods, build in a higher price or a larger margin.
- Compare fulfillment models (see FBO vs FBS) — for bulky products the economics of the two differ sharply.
Related guides: oversized goods on marketplaces.
Related guides: Wildberries logistics costs.
Frequently asked questions (FAQ)
"How do dimensions affect costs on a marketplace?" Dimensions determine a product's volume, which drives the rates for logistics, storage and inbound handling. The bigger the product, the more expensive it is to ship and store.
"What is volumetric weight?" It is the weight calculated from the volume of the packaging. The platform takes the greater of actual and volumetric weight, so a bulky light product is billed as a heavy one.
"Why are oversized products less profitable?" Logistics and storage for bulky products cost more and eat into the markup. At the same price, an oversized product yields a lower margin, which is why the economics are calculated before purchase.
"How can I cut logistics costs driven by dimensions?" Optimize the packaging so you do not pay for excess volume, choose the right fulfillment model, and build the logistics cost into the price for bulky products.
