Kombucha Ratio Calculator
Enter your batch volume to get exact amounts of tea, sugar, starter liquid, and water for kombucha fermentation.
Batch Settings
10% (mild)
15%
20% (acidic)
50g (less sweet)
60g
70g (sweeter)
Enter your batch size and click Calculate to see ingredient amounts.
Batch Summary
Standard first-fermentation recipe. Cool sweet tea to below 30C before adding starter and SCOBY.
Water (to brew tea)
Loose-Leaf Tea
Sugar (cane / white)
Starter Liquid
Brewing Steps
Summary
Enter your batch volume to get exact amounts of tea, sugar, starter liquid, and water for kombucha fermentation.
How it works
- Enter your total batch volume in liters or gallons.
- Choose how strong you want your tea (light, standard, or strong).
- The calculator applies standard kombucha ratios: 10-20% starter liquid, 60g sugar per liter, and 2-4 tsp loose tea per liter.
- Results show each ingredient in precise amounts, ready to measure.
Use cases
- Scale a 1-liter test batch up to a full gallon or larger vessel.
- Calculate starter liquid when using a new SCOBY with limited starter.
- Adjust tea strength for a more or less tannic flavor profile.
- Quickly convert a recipe between liters and gallons.
- Confirm ratios before a first-ever batch to avoid over- or under-fermentation.
Frequently Asked Questions
Last updated: 2026-07-01 ·
Reviewed by Nham Vu