What is volume-based pricing?
Volume-based pricing means shipping costs are calculated based on how much space a package takes up, not just how much it weighs.
Carriers use this approach to account for packages that are:
Large but lightweight
Small but very dense
Space-consuming in transit vehicles
Depending on the carrier, this may be referred to as cubic pricing, dimensional weight, or volumetric weight.
What is dimensional (DIM) weight?
Dimensional weight (DIM weight) is a pricing method that converts package dimensions into a billable weight.
In simple terms:
The carrier calculates the package’s volume (length × width × height)
That volume is divided by a carrier-specific divisor
The result is compared to the actual weight
The higher value becomes the billable weight
This ensures shipping prices reflect both size and weight.
What is cubic (volume) pricing?
Cubic pricing is a specialized form of volume-based pricing used by some carrier services.
Key differences:
Pricing is based on total package volume
Weight plays a smaller role (or is capped)
Designed for small, dense packages
Cubic pricing is often cheaper than standard weight-based pricing for compact shipments.
When volume-based pricing matters
Volume-based pricing is especially important when:
Shipping small but heavy items
Shipping products with dense materials
Comparing rates between similar services
In these cases, cubic or volumetric pricing can significantly reduce costs.
How Deliveri handles volume-based pricing
Deliveri automatically:
Calculates package dimensions
Applies carrier-specific pricing rules
Compares weight-based and volume-based options
This helps ensure you’re selecting the most cost-effective service for each shipment.
Key takeaway
Weight-based pricing focuses on how heavy a package is
Volume-based pricing focuses on how much space it takes up
Cubic pricing is ideal for small, dense shipments
Understanding the difference helps you make smarter shipping decisions.