Calculator

Brine calculator for fermenting

Salt percentage for dry-salted ferments and brine strength for anything under water. Enter your weights.

Use Salt % when you salt the vegetables directly, and Brine Strength when they sit in salted water.

Salt Percentage 2.50% Salt percentage relative to vegetable weight
Fermento saves the number with your batch. Download Fermento on the App Store
The calculator on Veggies, Salt %: vegetable weight and salt weight give the salt percentage, with ranges for common ferments

Salt percentage

Salt weight divided by vegetable weight, times 100. 25 g of salt on 1 kg of cabbage is 2.5%.

Brine strength

Salt weight divided by the weight of water plus salt, times 100. 35 g of salt in 1 litre of water is about 3.4%.

Which one do I need?

Dry-salted ferments such as sauerkraut use salt percentage. Anything submerged, such as whole cucumbers, uses brine strength.

In the app

The number is saved with the batch

In Fermento the salt percentage sits next to the batch's timeline, with its pH, temperature and weight readings. The food safety view tells you when a reading needs attention.

Download Fermento on the App Store AppleApp of the Day from the creators of murmur and Layered Vegetable ferments in Fermento
Food Safety for a sauerkraut: 'pH still high' needs attention, the temperature is ideal, with HACCP plan setup and exports below

Questions

How do I calculate salt for sauerkraut?

Weigh the cabbage, then divide the salt weight by the cabbage weight and multiply by 100. 2 to 2.5% is the range the guidance behind Fermento's sauerkraut plan uses.

How do I calculate brine strength?

Divide the weight of salt by the combined weight of water and salt, then multiply by 100.

What is the difference between salt percentage and brine strength?

Salt percentage compares salt to the vegetables. Brine strength compares salt to the salted water. They give different numbers for the same jar, so use the one your recipe names.

Sauerkraut salt ratio   Sauerkraut, kimchi and pickles   HACCP plan for kimchi and sauerkraut

The wait is worth it

Fermento is on the App Store, for iPhone and iPad.

Download Fermento on the App Store AppleApp of the Day from the creators of murmur and Layered