Kombucha is a fermented tea beverage enjoyed for its tangy flavor and potential probiotic benefits. However, its carbohydrate content can vary significantly depending on the brand, brewing method, and added flavors. This calculator helps you estimate the total carbohydrates per 100g of kombucha, including sugars and fiber, so you can track your macros accurately.
Whether you're following a low-carb diet, managing blood sugar, or simply curious about the nutritional profile of your favorite kombucha, this tool provides a quick and reliable estimate. Simply enter the values from the nutrition label or your homebrew recipe, and get the carbs per 100g instantly.
🧮 Enter Your Kombucha Values
How to Use This Tool
Using the Kombucha Carbs Per 100g Calculator is straightforward. Start by gathering the nutrition facts from your kombucha bottle or homebrew recipe. You will need the total carbohydrates (in grams), sugars (in grams), fiber (in grams), and the serving size (in milliliters) listed on the label. Enter each value into the corresponding field. The calculator then scales these numbers to a standard 100g reference, giving you the carbohydrate density per 100 grams. This is especially useful for comparing different brands or batches, as serving sizes vary widely (e.g., 240 ml vs. 355 ml).
Formula Explained
The calculation is based on a simple proportion: if a serving of X ml contains C grams of carbs, then 100 ml (or 100g, since kombucha is mostly water) contains (C / X) × 100 grams of carbs. The same formula applies to sugars and fiber. Net carbs are then calculated as total carbs minus fiber, a common metric for low-carb and keto diets.
Worked Examples
Carbs per 100g = (8 / 240) × 100 = 3.33 g. Sugars per 100g = (4 / 240) × 100 = 1.67 g. Net carbs = 3.33 g.
Carbs per 100g = (14 / 355) × 100 = 3.94 g. Sugars per 100g = (10 / 355) × 100 = 2.82 g. Fiber per 100g = (1 / 355) × 100 = 0.28 g. Net carbs = 3.94 - 0.28 = 3.66 g.
Factors Affecting Carb Content
The carbohydrate content of kombucha can vary due to several factors. The primary source of carbs is the sugar added during brewing (usually sucrose, glucose, or fructose). During fermentation, the SCOBY (Symbiotic Culture of Bacteria and Yeast) consumes some of this sugar, but the final amount depends on fermentation time, temperature, and the specific yeast strains. Shorter fermentation yields a sweeter, higher-carb beverage. Additionally, flavorings like fruit juice, honey, or herbs can add extra sugars and carbs. Some commercial brands also add sweeteners after fermentation, increasing the carb count further.
Standard Values & Reference Table
Below is a reference table of typical carbohydrate values for common kombucha types. Use these as a baseline when comparing your own results.
| Kombucha Type | Total Carbs (per 100g) | Sugars (per 100g) | Fiber (per 100g) |
|---|---|---|---|
| Plain / Original | 2.5 - 4.0 g | 1.5 - 3.0 g | 0 g |
| Ginger / Lemon | 3.0 - 5.0 g | 2.0 - 4.0 g | 0 - 0.5 g |
| Berry / Fruit | 4.0 - 7.0 g | 3.0 - 6.0 g | 0 - 1.0 g |
| Turmeric / Herbal | 2.0 - 4.5 g | 1.0 - 3.5 g | 0 g |
Frequently Asked Questions
Q: Is kombucha keto-friendly?
A: It depends on the brand and flavor. Plain kombucha typically has 2-4g net carbs per 100g, which can fit into a keto diet if consumed in moderation. Flavored varieties may have higher sugar content. Always check the label or use this calculator to verify.
Q: Why does my homemade kombucha have different carb values?
A: Homebrew kombucha can vary widely based on fermentation time, sugar type, and temperature. A longer fermentation (2-3 weeks) generally results in lower sugar and carb content. Using a hydrometer to measure specific gravity can give you a more precise estimate.
Q: Does the calculator account for alcohol content?
A: No. Kombucha may contain trace amounts of alcohol (typically less than 0.5% ABV), which contributes calories but not carbohydrates. This calculator focuses solely on carbohydrate content from sugars and fiber.
Q: Can I use this for other fermented beverages?
A: Yes, the same formula applies to any beverage where you know the total carbs per serving and serving size. For example, you can use it for cocktail carbs or whiskey nutrition.