The Ferment Lab
Practical, private, client-side tools. No accounts. Your data stays in your browser.
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Brine Calculator
Get safe, precise salt weights for vegetable ferments. Add the recommended weights & airlocks straight to your kit.
Typical range: 1.5–2.5% for most krauts & pickles. Use 2% as a safe default.
All calculations happen in your browser. We may earn a commission if you add gear via the Kit.
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More Lab tools coming soon
Batch Matchmaker quiz, timeline estimator, and the personal Ferment Tracker will appear here. In the meantime the Kit + product recommendations throughout the site already give you the same curated, one-click experience.