Salt percentage
3% salt — brine-pickle standard
Clearly salty — the brine bite you expect in a deli pickle. Most traditional half-sour recipes use 3-3.5% brine (30-35g salt per 1000g water).
Salt calculator
Enter your vegetable weight and a salt percentage. We return the exact salt mass in grams, plus teaspoons for each common grain.
Grain matters: one teaspoon of Diamond Crystal weighs half as much as one teaspoon of fine sea salt. Weigh in grams when you can.
All salt grains
| Grain | Grams | Teaspoons | Tablespoons |
|---|---|---|---|
| Diamond Crystal kosher | 30 g | 10.56 | 3.52 |
| Morton kosher | 30 g | 6.25 | 2.08 |
| Fine sea salt | 30 g | 5.27 | 1.76 |
| Pickling / canning | 30 g | 5.45 | 1.82 |
How much salt for a 3% brine?
A 3% brine is 30 g of salt per litre of water: about 28 g per US quart and 114 g per US gallon. The percentage is of the water weight only, and 1 ml of water weighs 1 g. Spoon measures depend on the salt grain, so weigh the salt when you can.
| Water | Salt | Fine sea spoon measure | Morton kosher spoon measure | Diamond Crystal spoon measure |
|---|---|---|---|---|
| 1 cup (237 ml) | 7.1 g | 1.2 tsp | 1.5 tsp | 2.5 tsp |
| 1 litre | 30 g | 1.8 tbsp | 2.1 tbsp | 3.5 tbsp |
| 1 US quart (946 ml) | 28 g | 1.7 tbsp | 2.0 tbsp | 3.3 tbsp |
| 2 quarts (1.9 L) | 57 g | 3.3 tbsp | 3.9 tbsp | 6.7 tbsp |
| 1 US gallon (3.8 L) | 114 g | 6.7 tbsp | 7.9 tbsp | 13.3 tbsp |
Pickling salt is close to fine sea salt (5.50 vs 5.69 g per teaspoon). Any other amount of water: 3% brine calculator.
Safety and use at 3%
The reliable middle for brine-pickling at room temperature. NCHFP recommended floor for brine-pickled cucumbers. Provides safety margin for typical kitchen (65-75°F) at 7-14 day ferment lengths.
Technique notes
For brine-pickling: calculate 3% of total brine weight, not of vegetable weight. E.g., 1kg water = 30g salt. For dry-salting: less common at this %, but used for onions + harder root vegetables.
Typical ferments at 3%
- brine pickle half sour
- giardiniera
- cauliflower brine
Frequently asked questions
How much salt is 3% for fermentation?
3% salt = 30.0g salt per 1000g. For a dry-salted ferment (sauerkraut, kimchi) that is 1000g of vegetables; for a brine it is 1000g of water, so a 3% brine takes 30.0g salt per litre. For 500g: 15.0g salt. Multiply the weight by 0.03. Use non-iodised salt and weigh in grams — teaspoon equivalences vary by salt grain type.
Is 3% salt safe for fermentation?
The reliable middle for brine-pickling at room temperature. NCHFP recommended floor for brine-pickled cucumbers. Provides safety margin for typical kitchen (65-75°F) at 7-14 day ferment lengths.
What does 3% salt taste like?
Clearly salty — the brine bite you expect in a deli pickle. Most traditional half-sour recipes use 3-3.5% brine (30-35g salt per 1000g water). For brine-pickling: calculate 3% of total brine weight, not of vegetable weight. E.g., 1kg water = 30g salt. For dry-salting: less common at this %, but used for onions + harder root vegetables.
What ferments use 3% salt?
Common ferments at 3%: brine pickle half sour, giardiniera, cauliflower brine. Compatible vegetables: 29 types — see list above for full pairings.
Vegetables at 3%
29 vegetables are commonly fermented at 3% salt. Each page gives timing at 68 °F, pH target, and species-specific technique.
- Green Cabbage — 14.0d at 68 °F · pH 3.40
- Kirby Cucumber — 7.0d at 68 °F · pH 3.60
- Jalapeño Pepper — 7.0d at 68 °F · pH 3.50
- Mixed Hot Peppers — 7.0d at 68 °F · pH 3.50
- Daikon Radish — 10.0d at 68 °F · pH 3.80
- Carrot — 10.0d at 68 °F · pH 3.80
- Red Beet — 10.0d at 68 °F · pH 3.80
- Garlic — 21.0d at 68 °F · pH 3.50
- Ginger Root — 7.0d at 68 °F · pH 3.80
- Yellow Onion — 10.0d at 68 °F · pH 3.80
- Turnip — 10.0d at 68 °F · pH 3.80
- Green Bean — 10.0d at 68 °F · pH 3.80
- Cauliflower — 10.0d at 68 °F · pH 3.80
- Okra — 7.0d at 68 °F · pH 3.80
- Bell Pepper — 7.0d at 68 °F · pH 3.80
- Celery — 7.0d at 68 °F · pH 3.80
- Brussels Sprouts — 10.0d at 68 °F · pH 3.50
- Asparagus — 5.0d at 68 °F · pH 3.60
- Mustard Greens (Gai Choy) — 10.0d at 68 °F · pH 3.40
- Kohlrabi — 10.0d at 68 °F · pH 3.50
- Zucchini — 7.0d at 68 °F · pH 3.60
- Red Radish — 5.0d at 68 °F · pH 3.60
- Rutabaga — 14.0d at 68 °F · pH 3.80
- Parsnip — 14.0d at 68 °F · pH 3.80
- Kale — 12.0d at 68 °F · pH 3.40
- Swiss Chard — 10.0d at 68 °F · pH 3.50
- Fennel — 10.0d at 68 °F · pH 3.60
- Leek — 10.0d at 68 °F · pH 3.60
- Eggplant — 10.0d at 68 °F · pH 4.00
Sources
Salt percentage guidance from the National Center for Home Food Preservation (NCHFP), FDA fermented vegetable guidelines, and Sandor Katz, The Art of Fermentation (Chelsea Green, 2012). Information is provided for educational purposes. Consult your local food safety authority for commercial production. Last verified 2026-10-24.
Gear for fermenting at 3% salt
A short, honest kit for lacto-fermentation. The scale is the one that matters most — everything here is by weight.
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- Digital kitchen scale (0.1 g)Salt % is by weight, not volume — a 0.1 g scale is what makes the math above accurate.View on Amazon →
- Glass fermentation weightsKeep vegetables submerged under the brine line so they ferment safely without mould.View on Amazon →
- Airlock fermentation lidsLet CO₂ escape while keeping oxygen out — wide-mouth lids that fit standard jars.View on Amazon →
- Wide-mouth mason jarsThe workhorse vessel for kraut, kimchi and brine pickles — 1 qt and ½ gal sizes.View on Amazon →
- Pickling / fine sea saltPure salt with no iodine or anti-caking agents, which can cloud brine and inhibit fermentation.View on Amazon →
- Stoneware fermentation crockFor scaling past the jar — a water-sealed crock for 5 L+ batches with built-in weights.View on Amazon →
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