Kombucha Calculators

Free, no-signup calculators for Kombucha. Pick a tool below - every formula is explained on its page and every reference value is sourced.

Tea, sugar, water and starter liquid for kombucha first fermentation.

Sugar or juice for kombucha second fermentation per bottle and batch.

Estimate the sugar in a glass of kombucha by residual sugar profile.

Second fermentation carbonation window by room temperature.

Estimate kombucha pH during first fermentation from starter, temperature and days.

Draw-off and refill amounts plus sweet tea for a continuous kombucha vessel.

Juice, fruit and sugar totals for flavoring a batch of kombucha bottles.

Water to add when cutting a strong brew down to drinking strength.