Food calories · USDA data
Calories in a tomato
22 calories
in 1 medium whole (2-3/5" dia), 123 g
- Protein
- 1.1 g
- Carbs
- 4.8 g
- Fat
- 0.2 g
- Fiber
- 1.5 g
A tomato has 22 calories. That is USDA's figure for 1 medium whole (2-3/5" dia), which weighs 123 g. Per 100 g, tomato has 18 calories.
Almost all of its calories, 75%, come from carbohydrate.
It takes 556 g of tomato to reach 100 calories, which is about 4.5 × 1 medium whole (2-3/5" dia).
Calories by portion
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 medium whole (2-3/5" dia) | 123 g | 22 | 1.1 g | 4.8 g | 0.2 g |
| 1 cup cherry tomatoes | 149 g | 27 | 1.3 g | 5.8 g | 0.3 g |
| 1 cup, chopped or sliced | 180 g | 32 | 1.6 g | 7 g | 0.4 g |
| 1 Italian tomato | 62 g | 11 | 0.5 g | 2.4 g | 0.1 g |
| 1 cherry | 17 g | 3 | 0.1 g | 0.7 g | 0 g |
| 1 oz | 28.3 g | 5 | 0.2 g | 1.1 g | 0.1 g |
| 100 g | 100 g | 18 | 0.9 g | 3.9 g | 0.2 g |
Portion weights are USDA's own. Your tomato may weigh more or less; for an exact number, weigh it and enter the grams in the food calorie lookup.
Where the calories come from
- Protein: 17% of calories (0.9 g per 100 g)
- Carbohydrate: 75% (3.9 g per 100 g, of which 1.2 g fiber)
- Fat: 9% (0.2 g per 100 g)
Shares use the general factors of 4 calories per gram of protein and carbohydrate and 9 per gram of fat, so they can differ a little from USDA's calorie figure. Daily Values are the FDA's adult Daily Values.
Compared with similar foods
Weight for weight, romaine lettuce has the fewest calories of these four (17 per 100 g) and asparagus the most (20).
| Per 100 g | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Tomato | 18 | 0.9 g | 3.9 g | 0.2 g |
| Romaine lettuce | 17 | 1.2 g | 3.3 g | 0.3 g |
| Zucchini | 17 | 1.2 g | 3.1 g | 0.3 g |
| Asparagus | 20 | 2.2 g | 3.9 g | 0.1 g |
Work out your own portion
The food calorie lookup has 3,070 foods. Pick a portion or type a weight in grams or ounces, then add foods to a plate to see the total for a meal. To see how a meal fits your day, the calorie calculator works out your daily calories.
Questions people ask
How many calories is in a tomato?
A tomato has 22 calories. USDA weighs 1 medium whole (2-3/5" dia) at 123 g, and tomato has 18 calories per 100 g.
How much protein does a tomato have?
1 medium whole (2-3/5" dia) (123 g) has 1.1 g of protein, 2% of the 50 g Daily Value. Per 100 g it is 0.9 g.
How many carbs does a tomato have?
1 medium whole (2-3/5" dia) has 4.8 g of carbohydrate, including 1.5 g of fiber, and 0.2 g of fat.
Source: USDA FoodData Central, SR Legacy (2018). USDA entry: Tomatoes, red, ripe, raw, year round average (FDC ID 170457). Values are averages; a packaged food's label may differ.