Australia Post Cubing

Topic summary

Australian Shopify store owners are seeking solutions for handling Australia Post’s “cubing” pricing method.

Cubing applies when packages exceed 1kg—the charged weight is calculated by multiplying length × width × height × 250, rather than actual weight.

This creates challenges:

  • Stores often lose money on larger/heavier orders
  • Adding extra shipping costs leads to frequent cart abandonment
  • Merchants are looking for apps or workarounds to manage this pricing structure

The discussion appears ongoing, with participants sharing experiences and seeking recommendations. One user attempted to share a resource link, but it returned a 404 error.

Summarized with AI on October 28. AI used: claude-sonnet-4-5-20250929.

Interested in the Australian stores who use Australia Post and what apps they may use, or how they then deal with Cubing ? Cubing is when the package weight is > 1 kg .. so the new weight charged is calculated when they multiple the l x w x h x 250 …

When we have the larger weighted orders .. we often lose out, and shipping is an issue for most customers, so adding an additional really makes it a lot of the time an abandoned order

That link comes back with a 404 errors …