Mad Alchemist: Relative Bitterness Ratio (RBR) Calculator
Relative Bitterness Ratio Calculator
Apparent Attenuation (%)
Relative Bitterness Ratio
RBR = (BU:GU) x (1 + (ADF - 0.7655))
by Ryan "Mad Alchemist" Shwayder
Relative Bitterness Ratio (RBR)
: A fairly detailed explanation of Relative Bitterness Ratio.
Beer Style Data
: The underlying data used for these charts plus all other style data from the 2008 BJCP Style Guidelines.
Bitterness Ratios (Chart)
: The average bitterness ratio for every beer style with relevant data.
Relative Bitterness Ratios (Chart)
: The average Relative Bittneress Ratio for every beer style with relevant data, corrected for attenutation.
: The balance of beers relative to each other, with BU:GU lined up next to RBR.
Relative Bitterness Calculator
: A simple web-based calculator to calculate RBR using BU:GU and Apparent Attenuation.
Beer Style Data (Google Docs)
: This is a link to all of this data over at Google Docs
: The author's (Ryan Shwayder) homebrew website.
2008 BJCP Style Guidelines
: The official 2008 BJCP Style Guidelines can all be found here. This is where the numbers came from.
Balancing Your Beer with the Bitterness Ratio
: This is from Brad Smith at BeerSmith. It explains how to get the BU:GU ratio in the first place.
: My favorite brewing software. Free trial, but you have to pay for the full version. It's worth it.
: The best free brewing software I'm aware of. Not as comprehensive as BeerSmith, but gets the job done for many.