Kombucha Nutrition Facts
Complete kombucha nutrition breakdown with 13 kcal per 100g, glycemic index, and diet compatibility.
Written by Victura Nutrition TeamReviewed by Victura Editorial ReviewLast updated Aug 9, 2026
13
Calories
0.0g
Protein
3.0g
Carbs
Generally yes
Is it healthy?
per 100g · per panel values
Track this food in VicturaQuick answer
A 100g serving of kombucha provides about 13 kcal. Per 100g you get about 3g carbs and 0g protein.
Kombucha is a whole food with approximately 13 calories per 100g, tracked in Victura for macro-aware meal logging.
- Calories (100g serving)
- 13 kcal
- Carbs (100g)
- 3.0g
- Protein (100g)
- 0.0g
- Serving reference
- 100g · 100g serving
Serving calculator
How much did you eat or drink — Kombucha?
13
Calories
0.0g
Protein
3.0g
Carbs
0.0g
Fat
Nutrition facts
per 100g · Source: USDA FoodData Central (seeded Phase 0)
13 kcal
Calories
Minerals
- Sodium: 5mg
Scientific explanation
Research-backedKombucha provides approximately 13 kcal per 100g, with 0.0g of protein, 3.0g of carbohydrates, and 0.0g of fat. This fermented tea beverage is crafted through the symbiotic fermentation of sweetened tea by a symbiotic culture of bacteria and yeast (SCOBY). During this biological process, the yeast converts sucrose into fructose and glucose, and then into ethanol. The acetic acid bacteria then convert the ethanol into organic acids, primarily acetic acid, gluconic acid, and glucuronic acid. This metabolic pathway significantly reduces the caloric density of the original sweetened tea, transforming it into a tart, effervescent, and low-calorie drink. A typical 8-ounce (240ml) serving contains roughly 30 calories, making it an excellent alternative to high-calorie sodas and fruit juices.
Community insights
Community insightAmong Victura meal logs, kombucha appears frequently as a functional beverage, a portable midday snack companion, and a popular alternative to alcoholic drinks or sugary sodas. Many users report incorporating a kombucha into their afternoon routine to combat the typical midday energy slump, noting that the mild carbonation and tart flavor provide a refreshing sensory lift without the heavy glycemic crash associated with sweetened energy drinks. Meal tracking data indicates that users who pair kombucha with a source of protein or healthy fats—such as a handful of raw almonds, pumpkin seeds, or a serving of Greek yogurt—report more stable energy levels and prolonged satiety compared to consuming the beverage on an empty stomach. Additionally, fitness enthusiasts in the community frequently log kombucha as a post-workout recovery drink, valuing its trace electrolytes and hydrating properties. Some users also highlight its utility as a digestive aid when consumed alongside heavier, protein-rich meals, attributing improved digestive comfort to the organic acids present in the fermented tea.
Pros
- Extremely low in calories (13 kcal per 100g)
- Rich in beneficial organic acids and antioxidants
- Excellent low-sugar alternative to sodas and juices
Cons
- Contains trace amounts of alcohol and caffeine
- Commercial varieties can sometimes contain high levels of added sugar post-fermentation
- Acidity can impact tooth enamel if consumed in excess
Best time to eat
Pair with protein and fiber for balanced meals, or enjoy as a refreshing midday beverage.
Good windows
- With main meals to support digestion
- Mid-afternoon as a low-calorie soda alternative
- Post-workout for light hydration
Consider avoiding
- Immediately before intense cardio workouts if sensitive to carbonation
- Late at night if highly sensitive to trace caffeine
Diet compatibility
Weight loss
Friendly
At 13 kcal per 100g, it is an exceptionally low-calorie beverage that serves as an excellent substitute for sugary drinks.
Keto
Friendly
Net carbs ~3.0g per 100g - compatible with strict keto when portion sizes are managed.
Diabetic friendly
Friendly
GI is low to moderate with only 2.0g sugar per 100g - generally blood-sugar friendly in moderation.
Frequently asked questions
People also ask
Is a kombucha healthy?
Yes — a kombucha is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals.
Can I eat a kombucha every day?
Most people can include a kombucha daily as part of a balanced diet, as long as total calories and carbs fit their plan.
Are Kombuchas good for weight loss?
At 13 kcal per 100g, it is an exceptionally low-calorie beverage that serves as an excellent substitute for sugary drinks.
How many calories are in a kombucha?
A typical medium serving of kombucha has about 13 calories, while 100g contains about 13 calories (USDA reference).
Are Kombuchas good before a workout?
Kombuchas can work before activity when you want easy carbs; pair a kombucha with protein if your session is long.
Are Kombuchas high in sugar?
Kombuchas contain about 2.0g sugar per 100g — mostly natural sugars when whole.
Is kombucha good for weight loss?
Kombucha is an excellent tool for weight loss when integrated mindfully into your diet. With only 13 calories per 100g, it serves as a flavorful, low-calorie substitute for sugary beverages. While it does not directly burn fat, its organic acids may support metabolic health, and its carbonation can help create a temporary feeling of fullness. To optimize weight loss, avoid high-sugar flavored varieties and consume it alongside whole foods rich in protein and fiber to maintain stable blood sugar and satiety.
Is kombucha keto-friendly?
Yes, kombucha can be highly compatible with a strict ketogenic diet, provided you monitor your portion sizes. With approximately 3.0g of total carbohydrates and 2.0g of sugar per 100g, a standard 100g to 150g serving fits easily within a daily limit of 20 to 50 grams of net carbs. To ensure it remains keto-friendly, choose raw, traditional unflavored kombuchas or those flavored with keto-compliant ingredients like ginger, lemon, or mint, and avoid brands that add high-carb fruit juices post-fermentation.
What is the glycemic index of kombucha?
The glycemic index (GI) of traditional kombucha is estimated to be low to moderate. Because it contains very low amounts of carbohydrates (3.0g per 100g) and sugar (2.0g per 100g), its overall glycemic load (GL) is exceptionally low. The organic acids, particularly acetic acid, produced during fermentation have been shown in scientific literature to help slow gastric emptying and improve insulin sensitivity, which can further blunt the glycemic response of any co-ingested carbohydrates.
Is kombucha safe for people with diabetes?
Kombucha is generally safe and can even be beneficial for people with diabetes when consumed in moderation. With only 2.0g of sugar per 100g, it has a minimal impact on blood glucose levels. Some clinical and animal studies suggest that the antioxidants and organic acids in fermented tea may help support healthy blood sugar management and improve insulin sensitivity. However, individuals with diabetes must carefully read nutrition labels to avoid commercial brands that add extra sugars or fruit concentrates post-fermentation.
How many calories does kombucha have?
Kombucha contains approximately 13 calories (kcal) per 100g. A standard 8-ounce (240ml) serving typically contains around 30 calories, making it a low-calorie alternative to sugary sodas. This low calorie count is a direct result of the fermentation process, where the active yeast and bacteria consume the added sugars, leaving behind a nutrient-dense, low-energy beverage.
How we review this guide
- Written by
- Victura Nutrition Team
- Reviewed by
- Victura Editorial Review
- Reference sources
- 4
- Last updated
- Aug 9, 2026
References
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