Use this calculator to determine exactly how much salt you need for a fermentation brine at your desired percentage. Perfect for fermented pickles, whole vegetables, and any brine-based ferment.
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A brine percentage tells you how much salt to dissolve in water relative to the water weight. For example, a 3% brine means 30 grams of salt per 1000ml (1 liter) of water. This is the standard for most vegetable ferments like pickles, carrots, and green beans.
Lower percentages (2 to 2.5%) produce faster fermentation with milder flavors but softer textures. Higher percentages (4 to 5%) slow fermentation down, preserve crunchiness, and are better for warm climates or long-term storage. Our complete salt guide covers this in detail.
For your first fermented pickles, start with 3 to 3.5%. This range produces reliably tangy, crunchy results within 3 to 7 days at room temperature. If you find your pickles too soft, increase to 4% next time. If they are too salty, drop to 2.5%.
For more fermentation tips and techniques, explore our Fermentation Basics guides.