Water Mixing Calculator
AdvancedCalculate the exact amount of mineral concentrate or packets to add to distilled water for optimal coffee brewing. Target specific water profiles for different brewing methods.
← Back to ToolsBrewing Method Recommendations
Water Requirements
Target Profile
Mixing Instructions
Concentrate Method
Mineral Packet Method
💧 Water Quality Tips
Water Profile Reference
| Profile | TDS | Hardness | Alkalinity | Best For |
|---|---|---|---|---|
| SCA Standard | 150 mg/L | 75 mg/L | 40 mg/L | Specialty Coffee Association recommended water |
| Third Wave Water | 135 mg/L | 85 mg/L | 45 mg/L | Popular mineral packet profile |
| Light Roast Optimized | 130 mg/L | 60 mg/L | 30 mg/L | Lower minerals for brighter acidity |
| Dark Roast Optimized | 180 mg/L | 90 mg/L | 50 mg/L | Higher minerals for body and sweetness |
| Espresso Water | 200 mg/L | 100 mg/L | 60 mg/L | Higher mineral content for espresso extraction |
Water Chemistry Tips
How To Use This Tool
Brewing water changes extraction, clarity, and perceived acidity. This calculator helps you build repeatable water from distilled water and mineral concentrates instead of relying on inconsistent tap water.
- 1
Set the total water volume you need
Choose enough brewing water for a single session or for a larger prep batch.
- 2
Pick a profile or enter custom mineral targets
The profile determines how much concentrate or how many packets you should add.
- 3
Mix carefully and label your batch
Consistent labeling makes it much easier to compare how different water profiles affect the same coffee.
Common Questions
Click a question to expand the answer.
Why not just use tap water?
Some tap water is excellent, but mineral content can change by area or season. Mixing your own water gives you a stable baseline.
What do hardness and TDS do in coffee brewing?
They influence extraction, buffering, body, and flavor clarity. Different coffees can taste brighter, sweeter, or flatter depending on the mineral balance.
Do I need distilled water for this calculator?
That is the cleanest starting point because it removes unknown minerals. If you start with mineralized water, the final profile will be less predictable.
What water profile is best for light roasts?
Many brewers prefer lower-buffer, lower-hardness profiles for light roasts because they can preserve brightness and clarity, but the ideal profile still depends on the coffee.