Fermentation Tools & Calculators
Free tools to help you get perfect measurements for your ferments.
Salt Calculator
Vegetable Ferments
Calculate exact salt amounts for sauerkraut, kimchi, pickles, and other vegetable ferments by weight.
Use calculatorKombucha Sugar Calculator
Kombucha
Get perfect sugar and tea ratios for any kombucha batch size. Includes starter tea calculations.
Use calculatorFermentation Time Chart
All Ferments
Interactive chart showing fermentation timelines at different temperatures for various ferments.
Use calculatorKombucha Carbonation Calculator
Kombucha
Calculate sugar and timing for the second ferment. Get perfect carbonation without bottle explosions.
Use calculatorPairing Guide
All Ferments
Discover perfect food pairings for kimchi, sauerkraut, kombucha, and more fermented foods.
Use calculatorKefir Grain Calculator
Kefir
Calculate the right grain-to-milk ratio for your kefir batches and fermentation times.
Use calculatorTroubleshooting Diagnostic
Troubleshooting
Interactive symptom checker to diagnose fermentation problems. Select what you see and get instant guidance.
Use calculatorpH Guide
Safety & Science
Interactive pH reference for fermented foods. Learn target pH levels, timelines, and how to test.
Use calculatorWhy Use Our Calculators?
Accurate Results
Based on tested ratios and fermentation science, not guesswork.
Works Offline
All calculations happen in your browser. No data sent anywhere.
Shareable
Share your calculation results with a simple link.