The classic proportion is 1 kg of sugar per 1 kg of berries. The calculator shows what Brix the mix has before cooking, how much water must be boiled off to jam consistency and how many jars you get.
Approximate calculation using a simplified model: for designing equipment and process modes, consult a technologist.
How much sugar is needed per 1 kg of berries?
For thick jam usually 0.8–1.2 kg, depending on the sweetness of the berries and the desired consistency.
The calculations are approximate: they help to assess the process and compare options, but do not replace a process design and trials on a specific raw material. This section is for reference only and contains no commercial offers.