Free calculators using industry-standard calculations.
Fermentation
Three-way must density conversion. Edit any field and the other two update live. Useful for comparing German Prädikats thresholds with Brix-based harvest data.
Fermentation
Convert between Brix (°Bx) and specific gravity. Use at harvest to estimate sugar content, or during fermentation to track progress with a hydrometer or refractometer.
Fermentation
Estimate alcohol by volume from initial and final specific gravity readings. Includes optional temperature correction for hydrometer readings taken outside 20°C.
Fermentation
Convert between measured wine density (kg/m³) and alcohol percentage. Useful for lab analysis and verifying finished wine ABV against legal limits.
Additions
Calculate the grams of KMBS or SMBS needed to reach your target molecular SO₂ based on wine pH, current free SO₂, and volume. Includes the free SO₂ requirement lookup.
Additions
Determine nutrient additions from FAN and ammonia measurements. Calculates current YAN and recommends DAP or organic nutrient quantities to reach your target.
These tools are provided as references only. Wineries are responsible for verifying all calculations before making production decisions.