What salt percentage should I use for fermentation?

For most vegetables, 2% salt by weight is the standard starting point. Use 2.5–3% for warmer environments (above 70°F / 21°C), saltier preferences, or longer fermentation periods of several weeks. Below 1.5% risks spoilage; above 4% can slow or stall fermentation.

Is this the same calculation as a brine percentage?

No. In a wet brine, the percentage is calculated against the water weight. In direct vegetable fermentation (like sauerkraut), the salt percentage is calculated against the produce weight. This tool uses the produce-weight method for dry-salting ferments.

What type of salt should I use?

Use non-iodized salt — kosher salt, sea salt, or pickling salt. Iodized table salt can inhibit the lactobacillus bacteria needed for fermentation. This calculator works in weight, so the brand does not matter as long as you weigh it.

How do teaspoon conversions work?

Fine sea salt weighs approximately 6 g per teaspoon (18 g per tablespoon). Kosher salt varies by brand: Morton is about 7.2 g/tsp, Diamond Crystal about 4.8 g/tsp. The teaspoon estimate shown is based on fine sea salt — weigh your salt for accuracy when precision matters.

Does the weight include liquid released after salting?

Enter the weight of your vegetables before salting. The salt draws out natural liquid (brine) from the produce, which is exactly what you want — no added water is needed for dry-salt ferments like sauerkraut.

Fermentation Salt Ratio

Name: Fermentation Salt Ratio
Availability: InStock
Author: Nham Vu

Enter your vegetable weight and target salt percentage to get the exact salt amount needed for safe, consistent lacto-fermentation.

Produce Weight

Vegetable Weight

Salt Percentage

Salt Required

Enter your produce weight and click Calculate.

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Summary

Enter your vegetable weight and target salt percentage to get the exact salt amount needed for safe, consistent lacto-fermentation.

How it works

Weigh your prepared vegetables (trimmed, chopped) and enter the weight.
Choose your unit — grams, kilograms, ounces, or pounds.
Select or type a salt percentage (2% is standard for most vegetables; 3% for warmer climates or longer ferments).
The calculator computes salt = produce_weight_grams × salt_percentage / 100.
Results display in grams, ounces, teaspoons, and tablespoons for whichever measuring tool you have on hand.

Use cases

Making sauerkraut from shredded cabbage.
Fermenting kimchi, cortido, or other slaws.
Preparing fermented dill pickles or carrot sticks.
Salting mixed vegetables for a fermented medley.
Scaling up a fermentation batch from a recipe.
Comparing salt levels between 2% and 3% ferments.

Frequently Asked Questions

Last updated: 2026-07-01 · Reviewed by Nham Vu