Professional Extraction

Perfect Brew Calculator

Precision coffee ratios in Metric & Imperial

Recipe Inputs
Strong Balanced Extraction Mild
Required Water Volume
510ml
17.2 fl oz
Coffee Dose
30g
1.06 oz
Net Yield (est.)
450ml
15.2 oz
Cup Estimate
1.9
Standard Cups
The Golden Ratio Chart
Competition Pour Over1:16.6
Traditional French Press1:15
Moka Pot1:10
Modern Espresso1:2
Cold Brew Concentrate1:8
Brewing Mastery
  • Water Quality: Use filtered water. Coffee is 98% water; chlorine or hardness ruins the flavor.
  • Ground Absorption: Coffee grounds absorb roughly 2x their weight in water. Our "Net Yield" stat accounts for this loss.
  • The Golden Ratio: For most palate types, 1:17 is the "Golden Ratio"—not too bitter, not too watery.
  • Precision: Always use a scale. Volumetric measurements (scoops/spoons) vary by up to 25% based on roast density.