Kombucha Calculatorv1.0.0

Use this Kombucha Calculator to determine the exact amounts of water, tea, sugar, and starter liquid needed for any batch size. Whether you are brewing a single gallon for personal consumption or scaling up to a multi-gallon commercial batch, enter your desired volume and the calculator will provide precise ingredient quantities based on standard kombucha ratios.

• Enter your desired Batch Size in the input field. Accept whole numbers, decimals (such as 2.5), fractions (such as 3/4), or mixed numbers (such as 1 1/2).
• Select your preferred Unit System by choosing either US Gallons or Liters. All ingredient outputs will adjust to match your selection.
• Choose a Tea Format to specify whether you are using tea bags or loose leaf tea. The calculator adjusts the tea quantity accordingly.
• Review the Ingredients Needed section for your calculated amounts of water, tea, sugar, starter liquid, and SCOBY count.
• Click Settings to customize the default ratios. Adjust the tea bags per gallon (default 6), loose leaf grams per gallon (default 12), sugar grams per gallon (default 160), or starter liquid milliliters per gallon (default 240) to match your recipe preferences.
• Enable Show step-by-step breakdown in Settings to view the formula derivation for each ingredient amount.
• Click Calculate to manually trigger the calculation, or allow the auto-calculation to update results as you type after a short delay.
• Click Reset to clear all saved preferences and return all fields to their default values.

Standard kombucha ratios per US gallon: 6 tea bags (or 12 grams loose leaf), 160 grams sugar (approximately 3/4 cup), and 240 mL (approximately 1 cup) of starter liquid. Scale linearly for larger or smaller batches. Always use one SCOBY per fermentation vessel regardless of batch size.

Plan and scale kombucha recipes with precision across a variety of brewing scenarios. This calculator supports homebrewers, commercial producers, educators, and fermentation enthusiasts who need reliable ingredient amounts for consistent results.

• Home Brewing: Calculate ingredients for a standard one-gallon batch when starting your first kombucha brew. Enter 1 gallon as the batch size and use the default ratios to get a reliable beginner recipe with 6 tea bags, 160 grams of sugar, and 1 cup of starter liquid.
• Scaling Up Production: Determine ingredient amounts for larger batches when transitioning from hobby brewing to commercial production. Enter 5 or 10 gallons and review the proportionally scaled quantities to ensure consistent flavor and fermentation across larger vessels.
• Metric Brewing: Switch to liters for international recipes or when working with metric measuring equipment. Enter your volume in liters and receive all ingredient amounts in grams and milliliters for straightforward measuring without manual conversion.
• Loose Leaf Tea Brewers: Select the loose leaf option to calculate tea amounts by weight in grams rather than by bag count. Adjust the grams-per-gallon ratio in Settings to match the specific tea variety and desired strength of your brew.
• Recipe Experimentation: Customize the sugar and tea ratios in Settings to explore different flavor profiles. Reduce sugar for a drier, more tart kombucha or increase it for a sweeter starting brew. Track your preferred ratios by saving them in the calculator.
• Educational Settings: Demonstrate fermentation science in classroom or workshop environments by showing how ingredient proportions scale linearly with batch size. Enable the step-by-step formula breakdown to illustrate the mathematical relationship between batch volume and each ingredient.
• Batch Planning: Enter fractional batch sizes such as 1.5 gallons or 2 3/4 gallons to calculate precise amounts when working with non-standard vessel sizes or when splitting a recipe to fit available containers.