Wine calculator

Estimated alcohol
Sugar to add
FG
Total volume
Natural sugar
Total sugar
Sugar concentration
How it's calculated
  • Natural sugar is derived from the original gravity using the ASBC Plato equation.
  • Sugar concentration = total sugar / total volume.
  • Total volume = juice + water + 0.625 × sugar (kg).
  • Estimated ABV = (OG − FG) × 131.25.
  • Target OG = FG + (target ABV / 131.25).
  • Required sugar = target sugar concentration × total volume.
Wine-making cheat sheet
Sanitizing equipment
Campden: 1 g/L + acid
Stabilization
Campden: 0.1 g/L
Potassium sorbate: 0.5–0.75 g/L (for backsweetening)
Sugar → alcohol
17 g/L sugar ≈ 1% ABV
Sparkling sugar
Light fizz: 4 g/L
Sparkling: 6–8 g/L
Champagne style: 8–10 g/L
Yeast nutrient
0.2–0.4 g/L