Calculations

I’m putting this page together to keep track of various URLs and formulas to better calculate the details of my beer homebrewing recipes. Items that I want to have better awareness of are…

  • mashing and brewhouse efficiency
  • wort evaporation
  • hop utilizations, acid conversion, and wort absorption
  • IBUs, OG and FG targeting based on recipe
  • etc

 

Some handy URLs:

ABV Calculator (Brewer’s Friend):
http://www.brewersfriend.com/abv-calculator/

Malt, Grain and Extract Reference (BeerSmith)
http://beersmith.com/Grains/Grains/GrainList.htm

Brew United’s Grain Database
http://www.brewunited.com/grain_database.php

Calculating Original Gravity for Beer Recipe Design (BeerSmith)
http://beersmith.com/blog/2015/01/30/calculating-original-gravity-for-beer-recipe-design/

Dilution and Boiloff Gravity Calculator (Brewer’s Friend)
http://www.brewersfriend.com/dilution-and-boiloff-gravity-calculator/

All Grain OG, FG, ABV Calculator (Brewer’s Friend)
http://www.brewersfriend.com/allgrain-ogfg/

Understanding Malt Spec Sheets: Advanced Brewing (BYO)
http://byo.com/mead/item/1544-understanding-malt-spec-sheets-advanced-brewing

Understanding Efficiency
http://braukaiser.com/wiki/index.php?title=Understanding_Efficiency

 

Some details for me to keep handy:

How much wort do whole leaf hops absorb?
I’ve seen pages mention 0.15 quarts/ounce

How to identify the potential SG from the “extract FG, dry basis” value, say 73%
pSG = 1 + (extract FG / 100) * 0.04621
pSG here equals 1.0337 or 1.034

 

 

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