From 36 A to 750CC ultra high. What cup size will I be?

At size 36, each 200 cc of implant corresponds to 1 cup size change. 750 cc implants would take you up 3 cup sizes to a D. 750 cc implants weigh 1 1/2 lbs each, will not fit retro-pectoral so they will have to be placed in front of the muscle and will most likely descend inferiorly and laterally down the chest wall. These will not be stable mechanically and will most likely need a revision in a short period of time. I strongly recommend you consider smaller size implants if you want long term results. Implants are not lifetime devices. 8% fail within the first year and 30% fail within six years.

Best Wishes,

Gary Horndeski, M.D.

None of the modalities to approximate final results from breast implants are 100% accurate; they merely facilitate the patient and the board certified PS concurring on the size and type of breast implant which will come the closest to reaching the patient's goal.
My patients prefer to try on implant sizers under garments they typically wear to determine if they fit as expected and help allay some of their trepidation associated with this decision.
Breast implant size has nothing to do with bra cup size - which varies with each bra manufacturer. The average implant volume placed in the US is 350 cc. A very general estimate is that one cup size is 150 to 200 cc of volume, but realize that no direct correlation exists between the two. I would recommend that you go with the size that boosts your self-esteem, and fits your anatomy.
Realize that implants of 600cc and higher will create more tissue thinning over time, have more potential for rippling, more potential for bottoming out, greater likelihood of breast lift revisions, etc.

With the size you have selected, you should gain about 3 cups in size. However, bras are not all made to standardized sizes n do vary greatly. You have chosen a very large and heavy implant that carries more risks of sagging over time, thinning your breast tissue, and may be heavy on your neck and shoulders. You may want to rethink the size you have selected.