Hey
beachlifetimeThanks for posting. This is a difficult number. It sounds like it's an Australian GPA? So one thing you could do is email one or two MBA programs and tell them what the Australian number is and ask them how they would convert it. Some schools may say you don't need to.
In the meantime, I highly recommend you complete HBX Core and do well in it. You are the type of person who will need an alternative transcript. HBX Core is not cheap, but it's the best signal to the AdCom that whatever happened in undergrad will not happen again in b-school
You are also in optional essay territory! You'll have to write an optional essay for each program where you explain what happened and why.
Lastly, you will need to nail the GMAT to help compensate for this. You have to show the AdComs that you are an intelligent individual and the GMAT is one proxy for that.
I hope that helps a bit! All the best for your journey.
Krista