Kombucha ratio calculator
Enter how big a jar (or vessel) you're brewing in, and the calculator will give you the exact tea, sugar, and starter liquid amounts, based on the proven ratios described in our F1 guide.
Enter your details
The final amount of kombucha you want — including the starter.
Lighter (60) — Recommended middle ground (70) — Stronger, fuller-bodied (90).
10% is the minimum, 20–25% is safer in warm conditions or with a weaker starter.
Result
Water
1.7 liters
Tea
11 g
about 4 bagsWhite granulated sugar
140 g
Starter liquid
300 ml
SCOBY
1
The water and starter together add up to your jar size — don't add extra water on top of the starter. The source of these ratios and a full step-by-step guide are in our complete F1 article.