Generally speaking, the wine yield of wine grapes is about 60%-70%. That is to say, 1-1.3 kg of grape juice can produce a bottle of wine with a capacity of 750 ml.
Although the final yield of wine is restricted by multiple factors, the wine yield of wine grapes is usually not less than 55%. If the calculated result is higher than 85% or lower than 55%, then you should pay attention to whether there is a problem in the brewing process!
Use the Wine Yield Calculator to accurately determine the yield of your wine.