Kombucha Sugar And Tea Calculator

Work out kombucha sugar and tea instantly with clear inputs, formula shown and shareable results.

About Kombucha Sugar And Tea Calculator

Kombucha is brewed at 50-70 grams of sugar and 4-6 grams of tea per litre, with 10-20% mature starter liquid added to acidify the batch immediately. The starter is the key safety control: it drops pH below 4.2 fast enough to exclude spoilage organisms and moulds.

Formula

Kombucha formulation

Sugar = volume x sugar rate; tea = volume x tea rate; starter = volume x starter %

Worked example

With the default values below, Kombucha Sugar And Tea Calculator returns Sugar Required of 1,200.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Batch Volumeminimum 0 L: 20 L
Sugar Rateminimum 0 g per L: 60 g per L
Tea Rateminimum 0 g per L: 5 g per L
Starter Liquidaccepts 0–30 %: 10 %

Results

Sugar Required: 1,200.00
Tea Required: 100.00
Starter Liquid Required: 2.000
Sweet Tea To Brew: 18.000

Step by step

1Values used
2Kombucha formulation
3Sugar Required= 1,200.00
4Tea Required= 100.00
5Starter Liquid Required= 2.000
6Sweet Tea To Brew= 18.000

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Kombucha must reach pH below 4.2 promptly and can develop alcohol above regulated thresholds. Use adequate starter, monitor pH, and never consume a batch showing mould.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Kombucha must reach pH below 4.2 promptly and can develop alcohol above regulated thresholds. Use adequate starter, monitor pH, and never consume a batch showing mould.

Frequently Asked Questions

Why is starter liquid essential?

It lowers pH immediately to below 4.2, which prevents mould and pathogenic bacteria from establishing before the culture takes over. Brewing without adequate starter is the main cause of failed and unsafe batches.

Does the sugar remain in the finished drink?

Only partly. Fermentation consumes 30-60% depending on time and temperature, and the balance remains as residual sugar. Longer fermentation gives more acid and less sugar.