Pickling Brine Salinity Calculator

About this calculator

Brine salinity — the salt concentration by weight of the water — is what actually drives a pickling or fermentation recipe, not the vague "some salt" that home recipes often list: the salt weight needed equals the water weight multiplied by the target salinity percentage, so a 5% brine for one liter of water needs 50 grams of salt regardless of what container or vegetable it is going into.

Home picklers and fermenters, following guidance from sources like the National Center for Home Food Preservation, work in salinity percentages rather than volume measures (a tablespoon of salt is not a fixed weight, since salt types vary in density) because getting the salinity right is what determines whether a lacto-fermentation ferments safely and predictably — typically in the 2% to 5% range depending on the vegetable and desired crunch.

This calculator takes your water weight and target salinity and returns the exact salt weight needed, so you can hit a repeatable brine strength every time instead of guessing with spoons.