I have done it. The numbers arent exact but close enough to see how many justice points you will get when your badges converge over to the new system. Copying my character over i found that i had alot more justice points than what the MMO champion calculator gave me. So i did a lil bit of math and found out how to use the calculator to get near how many justice points you will really get from your Badges.
First find out how many badges you have of frost and triumph then multiply it by 4.14. Now input the new number into the MMO-Champion calculator and Shazaam! You get a more accurate number of how many justice you will receive when the new content patch goes live.
Just as a following warning this is just what the conversion rate is now it does have a possibility to change since it is the PTR and my formula isnt 100% accurate but it will get you within the 10-50 points of what your number is depending on how many badges you have.
Madd Scientist Out! hopefully this helps some people out there that want to still gear before the Expansion.