You can calculate the Bupa Insurance from below Link:

https://www.bupa.com.au/health-insurance/quote

 

You can calculate the Allianz Care Insurance from below Link:

https://my.allianzcare.com/myquote/1

 

You can calculate the AHM Insurance from below Link:

https://www.ahmoshc.com.au/onshorejoin/

 

You can calculate the NIB Insurance from below Link:

https://www.nib.com.au/health-insurance/join/welcome