Australia Post API for Shopping Carts

Update: See Vipin’s comment below, there is a new API – details here: http://auspost.com.au/devcentre/

Old post from 2009 follows:

Australia post provides an API here:

http://drc.edeliver.com.au/

You need to post the following values to http://drc.edeliver.com.au/ratecalc.asp

• pickup & destination post code
• country (AU)
• weight
• service type (standard, express, etc..)
• length
• width
• height
• quantity

More details on their website

Aus post calculates the weight of a package by either the cubic weight or actual weight, whichever is greater.

For
example: if you have a 2kg package with these dimensions: 80cm(length) 
x  20cm(height)  x  30cm(width) then the actual weight you will be
charged for is:

Step 1: work out cubic meters: 0.80 x 0.20 x 0.30 = 0.048
Step 2: work out cubic weight: 0.048  x  250  =  12kg

That means, your 3kg package that is 80x20x30 you will actually be charged for a parcel that weighs 12kg!

Currently
working on a prestashop australia post calculator module, I will post
it here and on prestashop forums when it is complete.