Your desired goal of achieving 40cm per 360° for BOTH Hipfire and ADS while maintaining a feeling that the sensitivity isn't too fast is near impossible to achieve. This is mainly due in part to the fact that the FOV of your screen changes (larger zoom scopes have a lower FOV value, therefore being more zoomed in, therefore the sensitivity of the same cm/360° in a zoomed scope feels too fast) when using different zoomed level scopes.
Ultimately, as far as I'm aware, and much to my frustration there is no one size fits all conversion method between Hipfire to ADS, which will create the same/similar feeling from Hipfire to ADS, while maintaining a reasonable cm/360° distance. The science which has been concluded so far, is that it is all personal preference as to which conversion method you choose to use. Although many will tell you which is their preferred conversion method, and guides such as the conversion method guide in the forums > technical discussion > conversion method guide, will tell you that a good starting point is to use Monitor Distance Vertical 0% (good for same tracking speed, bad for same cm/360° distance, and especially penalizing for lower sensitivity users).
Additionally, with your FOV always changing between different scopes within the same game, your sensitivity/feeling of sensitivity between different games will often be affected if you have a different FOV used in a different game (whether that be because a game has a set maximum FOV lower than your intended FOV, or you decide to change it to a different value on a different game for whatever reason). But in saying that, you should try to keep your FOV the same across all your games (for Hipfire), that way it keeps the consistent feeling of same sensitivity while keeping the same cm/360° distance between games when using the 360° distance conversion method. Additionally some games sensitivities are affected within themselves by change in FOV between scopes and hipfire (and FOV between games), this can usually be seen at the bottom details of the page which says "affected by FOV" followed by a X or a tick next to it.
So if you wish to have the same cm/360° distance between games, use the 360° distance conversion method and convert from 40cm of whatever your starting game is, and do this the same across the board. Otherwise, you will possibly have to choose one of the monitor distance conversion methods to try and see if you can keep the consistent same 'feeling' of sensitivity across different FOV's.
Hope this all makes sense, sorry it's not condensed any further. Please if any other more expert users of the calculator can correct me please do. #rantover
