---
title: "Volume (Cubic) & Dimensional Weight Explained"
description: "Understand how volume-based pricing works, including cubic, dimensional, and volumetric weight, and when it can save you money on shipping."
url: https://helpcenter.ondeliveri.com/en/articles/19-volume-cubic-and-dimensional-weight-explained
collection: "Couriers & Rates"
updated: 2025-12-30
language: en
---

# Volume (Cubic) & Dimensional Weight Explained

Understand how volume-based pricing works, including cubic, dimensional, and volumetric weight, and when it can save you money on shipping.

## 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**.

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## 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**.

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## 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.