Brix Sugar Kombucha Calculatorv1.0.0

Use this calculator to determine how much sugar remains in your kombucha after fermentation. Brix measures the grams of dissolved sugar per 100 milliliters of liquid, and a refractometer provides this reading directly. Enter your measurements below and the calculator converts them into practical sugar content for your chosen serving size.

• Calibrate your refractometer with distilled water before taking any measurements. Ensure all liquids (distilled water, base tea, and kombucha) are at the same temperature for accurate results.
• Measure your base tea (brewed tea before adding sugar) on the refractometer and enter the result in the Base Tea Brix Reading field. This accounts for dissolved solids in the tea that are not sugar. If you have not measured your base tea, leave this field at 0.
• Measure your finished kombucha on the refractometer and enter the result in the Raw Brix Reading field. Accept decimals (3.5), fractions (7/2), or mixed numbers (3 1/2) as input.
• Enter the amount of kombucha you plan to drink in the Serving Size field. Select fluid ounces or milliliters from the Serving Unit dropdown. Common serving sizes include 8 oz, 12 oz, and 16 oz.
• Click the Calculate button or wait for results to update automatically. The calculator displays the adjusted Brix value, total sugar in grams, sugar in teaspoons, and calories from sugar.
• Open Settings to adjust decimal precision or enable the step-by-step derivation view, which shows the complete formula substitution and intermediate values.
• All inputs and settings persist automatically in your browser. Click Reset to clear everything and restore defaults.

The core formula is: Sugar (grams) = Adjusted Brix x (Serving Size in mL / 100). Adjusted Brix equals the raw Brix reading minus the base tea Brix reading. One fluid ounce equals 29.5735 milliliters. One teaspoon of granulated sugar weighs approximately 4.2 grams, and each gram of sugar provides 4 calories.

Track sugar content across different stages of fermentation and serving scenarios to make informed dietary and brewing decisions.

• Fermentation Monitoring: Measure Brix before and after primary fermentation to track how much sugar the SCOBY has consumed. Compare readings over multiple days to determine the optimal fermentation duration for your taste preference.
• Second Fermentation Tracking: Take a Brix reading before bottling for second fermentation and again before refrigerating. Calculate exactly how much residual sugar remains in each bottle to estimate carbonation levels.
• Dietary Planning: Determine the exact sugar and calorie content per serving for meal tracking or carbohydrate counting. Enter your preferred glass size (8 oz, 12 oz, or 16 oz) to see precise nutritional values for the amount you actually consume.
• Recipe Comparison: Compare sugar levels across different kombucha recipes by measuring the final Brix of each batch. Identify which tea blends, sugar types, or fermentation times produce lower-sugar results.
• Commercial Brewing: Verify sugar content for nutritional labeling requirements. Measure large batches using milliliter serving sizes and adjust decimal precision for regulatory compliance.
• Health-Conscious Brewing: Set a target sugar threshold (for example, under 2 grams per 8 oz serving) and use the calculator to confirm each batch meets the goal before bottling.
• Teaching and Education: Demonstrate the relationship between Brix readings and actual sugar content in fermentation science classes. Enable the step-by-step derivation to walk through the unit conversion and formula application.
• Batch Consistency: Record Brix readings from successive batches brewed with the same recipe to monitor consistency over time. Variations between batches highlight changes in fermentation temperature, SCOBY health, or ingredient quality that affect residual sugar levels.