Calculator purpose

This website is owned, managed and maintained by the Commonwealth Department of Health (the Department).

The Department makes every effort to ensure that the links and content on this website are kept up-to-date. However, users assume all risks associated with use of this website and should exercise their own independent skill or judgment or seek professional advice before relying on any information contained on this website.

Neither the Department nor the Commonwealth make any warranty or representation in relation to the accuracy, currency or completeness of any information contained on this website and do not accept any legal liability or responsibility for any injury, loss or damage incurred by the use of, reliance on or interpretation of the information contained on this website.


The Calculator is not required to and will not store any data server-side or client-side local storage. The Calculator holds the session data in memory to allow users to navigate back and forth within the application. 

Page history

Last updated: 
3 December 2019
Last reviewed: 
3 December 2019