Well I decided I got bored of working out the size of something by doing the calculation on my calculator so I made a little app to help me… I’ll be honest it does the job and it can remember last few calculations for comparison but its not exactly the most fully featured app in the universe.
it has the ability to remember (err only from a single session soon as u quit it disappears) the last sizes it worked out… but rather than create a proper rolling list I sorta did the lazy thing and did it in the most simplistic way possible and once it goes beyond a certain number you gotto wipe the last result list with the provided button to see more, it does tell you which section ur missing if u forgot to put one in, but it doesnt properly check if your entering numbers or letters so if you enter in letters rather than numbers it will likely crash… except maybe the top one which has slight validation lol.
Still it’s main job is to calc the size and it does this though it doesnt actually round the final number for you, you have to do that yourself but surely everyone can do that is my theory, the largest base I got is 4.498233 according to my app, a size 4 base which is 1 block/device under size 5, hopefully with the help of my app and the device,light and triangle count you can work out how to optimise the size of your ship’s bases and other, also can use it to help turn size 5 ship bp’s from the marketplace into size 4 ship’s in the most efficient maner (err tip… dump the lights lol).
i should probably include the calc the app is doing in txt form in the app to help people work out whats going on… but I not bothered yet, i’ll probably add this and fix the list at some point, just not yet :D, but i spent as long typing this post as i did making it so hey 
If it is of any use to you here it is:
https://drive.google.com/file/d/0B1ZqsPuJ1FKkbG05b1hlUGZpT1k/view?usp=sharing
If you want to know where to find those 3 figures it needs they should be in the blueprint info, oh says ship size calc but works on bases to 