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The Water Calculator For All Grain Brewing helps brewers calculate the total water required for the brewing process by summing mash water and sparge water volumes. Proper water calculation is essential for achieving the desired beer characteristics and efficiency.
The calculator uses the simple formula:
Where:
Explanation: This calculation ensures you have the correct total water volume for your all-grain brewing process, accounting for both mashing and sparging phases.
Details: Accurate water calculation is crucial for proper starch conversion during mashing, efficient sugar extraction, achieving target original gravity, and maintaining consistent beer quality across batches.
Tips: Enter mash water and sparge water volumes in liters. Both values must be non-negative numbers. The calculator will sum these values to give you the total water requirement.
Q1: What is the typical ratio for mash water?
A: A common ratio is 2.5-3.5 liters of water per kg of grain, but this can vary based on your system and recipe.
Q2: How much sparge water should I use?
A: Sparge water volume depends on your target pre-boil volume minus the mash water volume retained by the grain.
Q3: Should I account for water absorption by grains?
A: Yes, grains typically absorb about 0.8-1.2 L/kg, which affects how much wort you'll collect from your mash.
Q4: What about evaporation losses during boil?
A: This calculator focuses on total water input. You'll need to account for boil-off rates (typically 10-15% per hour) separately for your final volume.
Q5: Does water quality affect the calculation?
A: Water chemistry affects flavor, but the volume calculation remains the same regardless of water mineral content.