Calories in Tomato Juice: Nutrition Facts & Serving Sizes
Per 1 cup (243g)
Per 100g
Source: USDA FoodData Central, SR Legacy, March 2026.
One cup of tomato juice (243g) contains about 41 calories with 2.2g of protein, 8.5g of carbs, and 0.7g of fat. Per 100g, tomato juice provides just 17 calories, making it one of the lowest-calorie beverages with actual nutritional value. The standout micronutrient is vitamin C at 70.1mg per 100g, which is about 78% of the daily recommended value in a single cup. Tomato juice also delivers significant potassium at 217mg per 100g and vitamin A at 23mcg. It is worth noting that commercial tomato juice is high in sodium at 253mg per 100g (614mg per cup), so it is not ideal for people watching their salt intake. For anyone cutting calories, tomato juice is one of the most nutrient-dense low-calorie drinks available, well ahead of soda or sports drinks. It works as a standalone drink, cocktail mixer, or base for soups and sauces.
Nutrition Highlights
Calories by Serving Size
| Serving | Cal | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|
| 1 cup (243g) | 41.3 | 2.2g | 8.5g | 0.7g | 1g |
| 6 fl oz (182g) | 30.9 | 1.6g | 6.4g | 0.5g | 0.7g |
| 100g | 17 | 0.9g | 3.5g | 0.3g | 0.4g |
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Full Nutrition Facts (per 100g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calories | 17 | 1% |
| Protein | 0.9g | 2% |
| Total Fat | 0.3g | |
| Total Carbohydrates | 3.5g | 1% |
| Dietary Fiber | 0.4g | 1% |
| Sugars | 2.6g | 5% |
| Sodium | 253mg | 11% |
Vitamins & Minerals (per 100g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calcium | 10mg | 1% |
| Iron | 0.4mg | 2% |
| Potassium | 217mg | 5% |
| Vitamin A | 23mcg | 3% |
| Vitamin C | 70.1mg | 78% |
| Vitamin B6 | 0.1mg | 6% |
| Magnesium | 11mg | 3% |
| Phosphorus | 19mg | 2% |
| Zinc | 0.1mg | 1% |
| Selenium | 0.5mcg | 1% |
| Folate | 20mcg | 5% |
| Thiamin (B1) | 0.1mg | 8% |
| Riboflavin (B2) | 0.1mg | 8% |
| Niacin (B3) | 0.7mg | 4% |
% Daily Values based on a 2,000 calorie diet (FDA reference).
Health Benefits of Tomato Juice
Tomato juice delivers a concentrated dose of vitamins and antioxidants for very few calories. The 70.1mg of vitamin C per 100g supports immune function, collagen synthesis, and iron absorption from plant foods. A single cup of tomato juice nearly covers your entire daily vitamin C requirement.
The 23mcg of vitamin A per 100g (as beta-carotene from lycopene conversion) supports vision, skin health, and immune function. Lycopene, the pigment that makes tomatoes red, is also a powerful antioxidant that research has linked to reduced oxidative stress. Lycopene is actually better absorbed from processed tomato products (juice, paste, sauce) than from raw tomatoes because the cell walls are broken down during processing.
At 217mg of potassium per 100g, tomato juice supports blood pressure regulation and muscle function. This is relevant for those who train hard and lose electrolytes through sweat. However, the high sodium content (253mg per 100g) partially offsets the blood pressure benefit of potassium for those sensitive to salt.
For practical use, tomato juice is an excellent low-calorie drink during a cut. It provides volume, flavor, and real micronutrients at only 17 calories per 100g. It also works as a cooking liquid for soups, stews, and braised meats. If the sodium is a concern, look for low-sodium varieties that cut the salt content significantly.
Dietary Considerations
Tomato juice is naturally vegan, gluten-free, dairy-free, and paleo-friendly. It is keto-compatible in moderate servings (8.5g of carbs per cup). For weight loss, tomato juice is an excellent choice at only 41 calories per cup with decent fiber and vitamins. The main caveat is sodium: one cup contains about 615mg of sodium, which is 27% of the daily recommended limit. If you are on a low-sodium diet, choose low-sodium tomato juice. Avoid tomato juice cocktails with added sugars or alcohol mixers if you are tracking calories carefully.
Daily Intake (100g)
100g of tomato juice provides 1% of a 2,000-calorie diet.
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Frequently Asked Questions
How many calories in tomato juice?
One cup of tomato juice (243g) has about 41 calories. Per 100g, tomato juice contains 17 calories. A 6 fl oz serving (182g) has about 31 calories. Tomato juice is one of the lowest-calorie nutritious beverages available.
Is tomato juice good for weight loss?
Yes, tomato juice is a solid choice for weight loss. At just 41 calories per cup, it provides vitamin C, potassium, and antioxidants like lycopene without adding many calories. It can help satisfy cravings for something flavorful while keeping your calorie intake low.
How much protein in tomato juice?
Tomato juice contains 0.9g of protein per 100g. A one-cup serving (243g) provides about 2.2g of protein. Tomato juice is not a meaningful protein source and should be paired with a proper protein food to balance your macros.
Is tomato juice high in sodium?
Yes, most commercial tomato juice is high in sodium, containing about 253mg per 100g and about 615mg per cup. That is roughly 27% of the daily recommended sodium limit in one serving. Look for low-sodium varieties if you are watching your salt intake.
Is tomato juice the same as tomato sauce?
No. Tomato juice is a thin, liquid-pressed extraction of tomatoes with a calorie content of 17 per 100g. Tomato sauce and paste are much more concentrated, with far more calories, carbs, and sodium per serving. Tomato juice is far lower in calories and is meant to be consumed as a drink.
Does tomato juice have lycopene?
Yes. Tomato juice is actually a better source of bioavailable lycopene than raw tomatoes. The processing involved in making juice breaks down cell walls, which increases how much lycopene your body can absorb. Lycopene is an antioxidant studied for potential benefits related to heart health and oxidative stress.
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