Brew water loss ledger calculator

Calculate total process losses and required starting water with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use total process losses and required starting water to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Target packaged water-equivalent volume (L)
20
Grain absorption loss (L)
4
Mash/kettle dead spaces (L)
2
Transfer/packaging losses (L)
2
Boil evaporation (L)
3
Total process losses (L)
11
Required starting water (L)
31

Try another scenario

Target packaged water-equivalent volume (L)
22
Grain absorption loss (L)
4
Mash/kettle dead spaces (L)
2
Transfer/packaging losses (L)
2
Boil evaporation (L)
3
Total process losses (L)
11
Required starting water (L)
33
Calculation method

Calculation method

Total process losses (L)

Starting water=target+absorption+deadSpace+transfers+evaporation.

Required starting water (L)

Starting water=target+absorption+deadSpace+transfers+evaporation.

Symbols and units
a
Target packaged water-equivalent volume (L)
b
Grain absorption loss (L)
c
Mash/kettle dead spaces (L)
d
Transfer/packaging losses (L)
e
Boil evaporation (L)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Volume ledger at a common reference temperature; ingredient water and volume displacement not included. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Volume ledger at a common reference temperature; ingredient water and volume displacement not included.
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