I'm a bit confused. Beeralchemy reports my actual "mash efficiency" as 72.1%.
Brewer's Friend, on the other hand, has 4 different calcs for efficiency: conversion efficiency, Pre-boil efficiency, ending kettle efficiency, and brewhouse efficiency. My numbers there were 89.5%, 73%, 72%, and 61.4% respectively. (link to calc: http://www.brewersfriend.com/brewhouse-efficiency/
It appears that BeerAlchemy is reporting either Pre-boil efficiency or Ending Kettle efficiency, rather than Conversion efficiency. My understanding is that most everyone's conversion efficiency (assuming proper methods) should be at least 90%.
I'm ok with my 89.5% conversion efficiency, and probably ok with 73/72% kettle efficiency, but Brewhouse efficiency of 61% seems low.
Can anyone comment on this? Thank you.