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💡 Quick Tips

Salt type:
Sea salt is best, but Iodized salt, will work but may make brine slightly cloudy
Temperature matters:
Warmer rooms require higher salt percentages
Weigh, do not measure:
Volume measurements are inconsistent for salt
Taste guides timing:
Ferments are finished when they taste right to you

📊 Salt Percentage Guide

Type Salt % Best For
Light 2.0% Quick pickles, summer
Standard 2.5% Most vegetables
Strong 3.0% Long ferments, hot climates
Sauerkraut 2.0-2.5% Dry-salted cabbage

See our full salt ratio guide here!

⚠️ Safety First

Signs of Good Fermentation: Bubbles, cloudy brine, tangy smell, vegetables change color slightly
Throw It Out If: Foul smell (not tangy), slimy texture, fuzzy mold (not white film), pink/red discoloration
Fermentation Calculator – Brine & Dry Salt
Old School Ferments

Fermentation Calculator

Precise brine and dry salt measurements for perfect ferments

Weigh your vegetables and water together, then calculate salt needed for the total weight.
Salt to Add
45 g
1800 g × 2.5% = 45 g

📝 Printable Batch Card

Start Date:
Method: Total Weight Method
Salt Percentage: 2.5%
Salt Amount: 45 g
Total Weight: 1800 g
Weigh your vegetables and water together, then calculate salt needed for the total weight.
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🧭 Common Troubleshooting

Why Ferments Turn Cloudy? Cloudy brine is usually normal. Learn when it matters and when it does not. Read More →
Sauerkraut Too Salty? What went wrong and how to fix it next time Read More →
Most Common Fermentation Mistakes Avoid these common fermentation mistakes before they ruin a batch. Read More →

⭐ Featured Recipe

Fermented Garlic
Old School Method

Old School Fermented Garlic

A simple, reliable ferment using brine fundamentals. Transform fresh garlic into mellow, probiotic-rich cloves.

Get Recipe

How to Use the Fermentation Salt Calculator

Choose the method that matches the ferment you are making:

  • Total Weight — Use the combined weight of vegetables and water.
  • Water Only — Use this when making a separate brine to pour over vegetables.
  • Dry Salt — Use this for sauerkraut, kimchi, and other ferments where salt is mixed directly into the vegetables.

Enter the weight, choose your salt percentage, and the calculator will tell you exactly how many grams of salt to use.

Old School Tip: Use a digital kitchen scale instead of teaspoons or tablespoons. Different salts take up different amounts of space, but grams are always grams.

For more detail on choosing a percentage, see How Much Salt for Fermenting Vegetables.

Fermentation Brine Calculator

For a separate brine, choose Water Only and enter the weight of your water.

A 2.5% brine made with 1,000 grams of water requires 25 grams of salt. Because 1 milliliter of water weighs approximately 1 gram, 1 liter of water is roughly 1,000 grams.

This method works well for whole or chopped vegetables that need added liquid to remain submerged.

Sauerkraut Salt Calculator

For sauerkraut, choose Dry Salt and enter the weight of your shredded cabbage.

A common range is around 2% to 2.5% salt by cabbage weight. For example, 1,000 grams of cabbage would require 20 grams of salt at 2% or 25 grams at 2.5%.

Old School Tip: Weigh the cabbage after removing the core and any outer leaves you are not using. Calculate the salt from what is actually going into the ferment.

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