The most resent Tesla app will tell you what your current 100% estimate is if you go to the charging screen and pull the limit over to 100% now (don't lift your finger, the estimate shows while you are moving the line). I guess it might vary a mile or two from what it would actually estimate if you 100% charged, but my LR RWD 100% charges to 322 and if I pull it over that's what it also estimates.