Tomato: Carbs, Protein, Fat & Calories
One serving of tomato (1 medium (123 g)) has 4.8 g carbs (3.3 g net), 1.1 g protein, 0.2 g fat and 22 calories. Change the amount below to calculate any portion.
* Based on a 2,000-calorie diet. Rounded averages from USDA FoodData Central.
Tomato by serving size
| Serving | Calories | Carbs | Net carbs | Protein | Fat |
|---|---|---|---|---|---|
| 1 medium (123 g) | 22 | 4.8 g | 3.3 g | 1.1 g | 0.2 g |
| 1 oz (28 g) | 5 | 1.1 g | 0.8 g | 0.3 g | 0.1 g |
| 100 g | 18 | 3.9 g | 2.7 g | 0.9 g | 0.2 g |
Key facts
- 74% of its calories come from carbs, 17% from protein and 9% from fat — it is mainly a carbohydrate food.
Compare with other vegetables (per 100 g)
| Food | Calories | Carbs | Net carbs | Protein | Fat |
|---|---|---|---|---|---|
| Broccoli (Cooked) | 35 | 7.2 g | 3.9 g | 2.4 g | 0.4 g |
| Spinach (Raw) | 23 | 3.6 g | 1.4 g | 2.9 g | 0.4 g |
| Carrot (Raw) | 41 | 9.6 g | 6.8 g | 0.9 g | 0.2 g |
| Tomato | 18 | 3.9 g | 2.7 g | 0.9 g | 0.2 g |
| Onion | 40 | 9.3 g | 7.6 g | 1.1 g | 0.1 g |
| Green Peas (Cooked) | 84 | 15.6 g | 10.1 g | 5.4 g | 0.2 g |
| Cauliflower (Raw) | 25 | 5 g | 3 g | 1.9 g | 0.3 g |
| Romaine Lettuce | 17 | 3.3 g | 1.2 g | 1.2 g | 0.3 g |
Frequently asked questions
How many carbs are in tomato?
One serving of tomato (1 medium, 123 g) has 4.8 g of carbohydrate, including 1.5 g of fiber, so 3.3 g net carbs. Per 100 g it has 3.9 g carbs (2.7 g net).
How much protein is in tomato?
One serving of tomato (1 medium, 123 g) has 1.1 g of protein (2% of the daily value). Per 100 g it has 0.9 g of protein.
How much fat and how many calories are in tomato?
One serving of tomato (1 medium, 123 g) has 22 calories and 0.2 g of fat, of which 0 g is saturated. Per 100 g: 18 calories and 0.2 g fat.
Is tomato keto-friendly?
Yes — tomato has only 2.7 g net carbs per 100 g, which fits easily into a keto limit of 20–50 g net carbs a day.
Calculators
- Carb Counter — add tomato to a meal and track carbs and net carbs.
- Protein Calculator — how much protein you need per day.
- Fat Calculator — your daily fat and saturated fat limits.