Chaptalization & Water dilution Winemaking Calculator

  • Chaptalization

    Chaptalization is the process of adding sugar to grape juice or must before fermentation, which will boost the alcohol level in the finished wines. This process is practiced in cool weather regions, where under ripeness are a problem and the sugar level of the grapes is too low to rich the desired alcohol level. Control of chaptalization is fairly strict in many countries. The legality of chaptalization process varies by country, region, forms of sugar and even wine type. After sugar is added to the grape juice or must, naturally-occurring enzymes convert the sucrose molecules in sugar into glucose and fructose, which are then fermented by the yeast and producing alcohol and carbon dioxide.

    Volume of must, juice
    Actual brix of must, juice °Bx
    Desired brix of must, juice °Bx
    Brix Level of the high brix component °Bx
    Amount of high brix component to be add
  • Water dilution

    Grapes with too much sugar means a lot of alcohol will be produced and this can cause problems with the primary and secondary fermentations. High alcohol level is becoming inhibitor for most yeast strains and malolactic bacteria and actually kills them, which can cause a sluggish or stuck fermentation. To prevent that some water need to be added to lower the sugar levels in grape juice/must. Adding water will not only dilute your sugar concentration, but you will dilute the total acidity of the juice/must as well. For that reason, unless the must/juice already has high acid, it is important to check and adjust your acidity and pH to a proper level. However this practice could cause a dilution in flavors as well, so winemakers need be very carefully how much water to add to their grape must/ juice prior fermentation.

    Volume of must, juice
    Actual Brix of must, juice °Bx
    Starting SG of must, juice SG
    Targeted Brix of must, juice °Bx
    Ending SG of must, juice SG
    Volume of water to be add
  • Weight and Volume equivalents

    Weight equivalents

    1 g = 1000 mg
    1 mg = 0.001 g
    1 µg = 0.001 mg
    1 oz = 28.35 g
    1 kg = 2.2 lbs = 1000 g
    1 lb = 16 oz = 454 g = 0.454 kg
    1 (US)ton = 2000 lbs = 907.19 kg
    1 metric ton = 2204.62 lbs = 1000 kg

    Volume equivalents

    1 L = 1000 mL
    1 dL = 10 L
    1 mL = 1000 µL
    1 hL = 100 L = 26.4 gal
    1 L = 33.8 oz = 1000 mL
    1 (US)gal = 128 oz = 3785 mL = 3.78 L
    1 qt = 32 oz = 946 mL = 0.946 L
    1 pt = 16 oz = 473 mL = 0.473 L

    Weight / Volume equivalents

    1.0 g/L = 1000 mg/L = 1000 ppm
    1.0 g/L = 0.1 g/100 mL = 100 mg/100 mL
    1.0 g/L = 1.00 mg/mL = 1000 µg/mL
    1.0 g/L = 0.1%(w/v)
    1.0 mg/L = 1ppm
    1 lb/1000 gal = 454 g/1000 gal = 0.45 g/gal.
    1 lb/1000 gal = 0.12 g/L = 12 g/hL = 120 ppm
    1 g/hL = 1 g/26.42 gal. = 0.038 g/gal.

Newsletter

Be informed, subscribe for our weekly newsletter.

/ Back to Top