Calories in Apple Cider Vinegar: Nutrition Facts & Serving Sizes
Per 1 tbsp (15g)
Per 100g
Source: Web research, March 2026.
Apple cider vinegar is a fermented vinegar made from crushed apples, with just 3 calories per tablespoon (15g). It contains virtually no protein, fat, or fiber, with only 0.1g of carbs per tablespoon. Per 100g it provides 21 calories, 0.9g carbs, and 0.4g sugar. Despite its low nutrient density, it does supply a small amount of potassium (73mg per 100g) and traces of calcium, iron, and magnesium. The key active component is acetic acid, produced during fermentation, which gives ACV its sharp flavor and much of its functional reputation. It is used in salad dressings, marinades, and health shots, and is popular in fitness and weight management communities as a low-calorie flavor booster. The raw, unfiltered version with the "mother" (a colony of beneficial bacteria) is the most commonly referenced form for wellness purposes.
Nutrition Highlights
Calories by Serving Size
| Serving | Cal | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|
| 1 tbsp (15g) | 3.2 | 0g | 0.1g | 0g | 0g |
| 100g | 21 | 0g | 0.9g | 0g | 0g |
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Full Nutrition Facts (per 100g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calories | 21 | 1% |
| Protein | 0g | |
| Total Fat | 0g | |
| Total Carbohydrates | 0.9g | |
| Dietary Fiber | 0g | |
| Sugars | 0.4g | 1% |
| Sodium | 5mg |
Vitamins & Minerals (per 100g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calcium | 7mg | 1% |
| Iron | 0.2mg | 1% |
| Potassium | 73mg | 2% |
| Magnesium | 5mg | 1% |
| Phosphorus | 8mg | 1% |
| Selenium | 0.1mcg | 0% |
% Daily Values based on a 2,000 calorie diet (FDA reference).
Health Benefits of Apple Cider Vinegar
Apple cider vinegar is one of the most calorie-efficient condiments you can add to your diet. At just 3 calories per tablespoon, it lets you add bold flavor to meals without adding meaningful macros, which makes it a solid tool for anyone in a calorie deficit.
The acetic acid in ACV has been studied for its potential role in blood sugar management. Some research suggests that consuming vinegar before or with a carb-heavy meal may help moderate the post-meal blood sugar spike, which is relevant for anyone trying to stay lean and avoid energy crashes.
ACV also contains a small amount of potassium (73mg per 100g), a mineral that supports muscle contractions and electrolyte balance. While it is not a major source, every bit counts when you are eating clean and watching your intake.
Many people use ACV as part of a morning routine, mixing 1-2 tablespoons with water before meals. It may help with appetite control for some individuals, making it easier to stick to a calorie goal throughout the day.
It is a staple in meal prep: drizzle it over salads, use it to marinate chicken or fish, or add it to homemade sauces. Its sharp acidity can replace higher-calorie dressings and keep your plate flavorful without blowing your macros.
Dietary Considerations
Apple cider vinegar is naturally vegan, gluten-free, and contains no fat or protein. With only 0.1g of carbs per tablespoon, it is fully keto-compatible and fits virtually every dietary pattern. It has no cholesterol and negligible sodium per serving (0.8mg per tablespoon). Because it is extremely low in calories, it is ideal for weight loss phases. People with acid sensitivity or GERD should use it with caution, as the high acidity can irritate the esophagus. Always dilute it in water or food rather than drinking it straight.
Daily Intake (100g)
100g of apple cider vinegar provides 1% of a 2,000-calorie diet.
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Frequently Asked Questions
How many calories in apple cider vinegar?
Apple cider vinegar has about 3 calories per tablespoon (15g) and 21 calories per 100g. It is essentially a zero-calorie condiment for practical purposes.
Is apple cider vinegar good for weight loss?
ACV is popular in weight loss circles because it is nearly calorie-free and may help with appetite control. Some studies suggest acetic acid can help moderate blood sugar spikes after meals, which may reduce cravings. It is not a magic solution, but it is a useful low-calorie tool in a well-structured diet.
How much protein in apple cider vinegar?
Apple cider vinegar contains 0g of protein per serving. It is not a protein source.
Is apple cider vinegar keto-friendly?
Yes. With only 0.1g of carbs per tablespoon, apple cider vinegar fits easily into a ketogenic diet. It adds flavor without impacting your carb limit.
How should I take apple cider vinegar?
The most common approach is 1-2 tablespoons diluted in a large glass of water, taken before meals. You can also use it in salad dressings, marinades, or sauces. Never drink it undiluted as it can damage tooth enamel and irritate your throat.
What is the difference between raw and filtered apple cider vinegar?
Raw, unfiltered ACV contains the "mother," which is a cloudy mixture of beneficial bacteria and enzymes from fermentation. Filtered ACV has this removed. The raw version is generally preferred by those using it for wellness purposes.
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