ARIA collects recorded music sales data from the majority of Australia's music retailers. The data from each store is matched with the ARIA database and the sales figures are extrapolated to achieve a 'best estimate' of the actual overall sales of each title. Titles are ranked according to their 'weighted' sales figures.
The ARIA charts are calculated once a week on Friday. They are based on retail recorded music sales within Australia for the week from the preceding Friday to the Thursday prior to calculation. The new charts are usually uploaded to the website on Saturday night Eastern Australian time.
The ARIA accreditations are based on sales from the record companies to retailers, while the charts are based on sales from the retailers to the public. Sometimes a title purchased in great quantity by stores in anticipation of massive retail sales may sell more slowly than expected and a less highly anticipated release may exceed expected sales.
Chart Data include: