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About

Food preservation requires strict adherence to chemistry to prevent spoilage and dangerous bacterial growth like Clostridium botulinum. This calculator determines the exact salinity required for different pickling methods. Whether you are creating a full-sour fermented pickle or a vinegar-based refrigerator pickle, the ratio of salt to water determines safety and texture. Users must be aware that different types of salt (Table, Kosher Diamond, Kosher Morton) have vastly different densities. This tool standardizes measurements by weight to ensure the salinity percentage is chemically accurate regardless of the salt crystal size.

pickling brine canning safety salt calculator fermentation food preservation

Formulas

The salinity percentage is calculated based on the total weight of the water (and sometimes produce). For simple water brine:

Salt(g) = Water(ml) × (Percentage ÷ 100)

Reference Data

Brine StrengthUse CaseSalt per Liter (Water)
2.0%Half-Sour Pickles20g
3.5%Standard Fermented Pickles35g
5.0%Mold Inhibition (Kraut)50g
10.0%Brining Meats / Cheese100g
Vinegar PicklesShelf Stable (High Acid)(Uses 50/50 Vinegar/Water)
Salt TypeDensity (g/cup)Conversion Factor
Table Salt~273g1.0
Morton Kosher~241g1.13
Diamond Crystal~135g2.0

Frequently Asked Questions

It is not recommended. Iodine can cause the brine to become cloudy and may discolor vegetables. Use pure pickling salt, kosher salt, or sea salt.
A cup of Diamond Crystal kosher salt weighs significantly less than a cup of table salt due to grain size. Using volume can lead to dangerously low salinity. Weight is the only safe metric.
For water bath canning, the pH must be 4.6 or lower. If you are not fermenting (creating acid naturally), you must use a vinegar with at least 5 percent acidity.