Calculation worksheet - Debt detonator

I am looking for a worksheet - I think it will need to be in excel to look at savings that people can have by either paying more on their loan, or finding out how much they need to pay to pay their loan off by a certain date or pay their loan down to a certain amount by a certain date. But it must show is a really nice graphical form not a basic excel form. Attached is the summary of what I am looking for