Calculate vinegar, water, salt and sugar for a pickling brine.
Diluting vinegar with water reduces acidity proportionally, and safe shelf-stable pickling requires the final brine to stay above about 2.5 per cent acidity. A one-to-one dilution of 5 per cent vinegar lands at 2.5, which is the practical floor. Refrigerator pickles tolerate lower acidity because cold slows spoilage, but anything stored at room temperature depends entirely on this figure.
Pickling Ratio
Brine volume = jar volume × (1 − produce fill); acidity = vinegar × its strength ÷ brine volume
Home preserving carries food safety risks including botulism. Follow tested recipes from a recognised food safety authority for any shelf-stable preserving, and treat this as a formulation aid only.
Brine volume = jar volume × (1 − produce fill); acidity = vinegar × its strength ÷ brine volume Diluting vinegar with water reduces acidity proportionally, and safe shelf-stable pickling requires the final brine to stay above about 2.5 per cent acidity. A one-to-one dilution of 5 per cent vinegar lands at 2.5, which is the practical floor.
Refrigerator pickles tolerate lower acidity because cold slows spoilage, but anything stored at room temperature depends entirely on this figure.
This calculator takes 5 inputs: Total jar volume, Share filled with produce, Vinegar share of the brine, Vinegar acidity, Salt as a share of brine. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.