Free Fermentation Tools

Handy calculators and tools to help you get your fermentation ratios, timing, and recipes right every time. No signup required.

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Brine Calculator

Calculate exactly how much salt to add to your water for the perfect fermentation brine at any percentage.

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Salt Percentage Calculator

Find the right salt weight for dry-salting vegetables like sauerkraut and kimchi based on your vegetable weight.

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Fermentation Timer Guide

Find out how long to ferment common vegetables, drinks, and dairy products based on temperature and salt level.

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Kombucha Recipe Builder

Build a custom kombucha recipe based on your batch size. Get exact tea, sugar, and starter liquid amounts.

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