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Brewhouse Efficiency Calculator
Reports beer mash extraction efficiency in percentage terms and points per pound per gallon (ppg). Useful for all grain beer brewers to calculate their actual efficiency at extracting sugars from the grain during the mash. Enter the amount of wort collected, the gravity measurement, and the grain bill.
Batch Data:
Units:
Wort Volume: (Gallons)
Gravity Measurement: (input 1.xxx) adjust for temperature using this calculator.
Pounds Grain
   
  Gravity at 100% Efficiency:
        
  Gravity at 75% Efficiency:
-
  * Efficiency:
-
Points / Pound / Gallon (ppg):
-
 

                   
* There are four main types of efficiency in the brewing world. 'Efficiency' alone could refer to any of these. Each type references a different point in the brewing process. This calculator can compute each of them, but it is up to you to provide the corresponding volume and gravity:
  • Conversion Efficiency - The percentage of total available sugars that were extracted from the grains inside the mash tun.
    • Gravity - measured before the boil (blend of all runnings).
    • Volume - how much mash water was used (do not count grain absorption or mash tun dead space).
  • Pre-Boil Efficiency - The percentage of total available sugars that made it into the kettle.
    • Gravity - measured before the boil (blend of all runnings).
    • Volume - how much wort went into the kettle.
  • Ending Kettle Efficiency - The percentage of total available sugars that made it to the end of the boil, before draining the kettle.
    • Gravity - OG (measured after cooling, before pitching yeast).
    • Volume - ending kettle volume (when cooled, before draining).
  • Brew House Efficiency - An all inclusive measure of efficiency, which counts all losses to the fermentor. This can be thought of as 'to the fermentor' efficiency. Hops absorption factors into this, and is reduced on the same equipment by ~1% in super hoppy beers.
    • Gravity - OG (measured after cooling, before pitching yeast).
    • Volume - how much wort went into the fermentor.
For detailed information on the topic of efficiency, check out the Braukaiser Wiki: Understanding Efficiency.

The grain drop down boxes have been updated to include sugars and extracts. Normally brew house efficiency applies to all grain batches, but if your grain bill includes sugars this calculator still works. Sugars and extracts (which are not mashed) are excluded from the efficiency result so it is not skewed.

This calculator is for approximation purposes. If you are using a grain not listed in the drop down please send us feedback.

Thanks for using our calculator. You might be interested in the Complete Recipe Builder. It is a big time saver, easy to use, and you can try it anonymously. OG/FG/IBU/SRM/ABV are automatically calculated. Recipes can be saved, printed, shared, and brewed for complete record keeping.

Click Here To Try The Complete Recipe Calculator




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