Calories in Tomato
Tomatoes contain 18 kcal per 100g — among the most calorie-dilute foods. A medium tomato is just 22 kcal. Rich in lycopene.
Nutrition by portion size
| Portion | kcal | Carbs (g) | Protein (g) | Fat (g) | Fiber (g) |
|---|---|---|---|---|---|
| 1 medium tomato (~123g) | 22 | 5 | 1.1 | 0.2 | 1.5 |
| 1 cup chopped tomato (~180g) | 32 | 7 | 1.6 | 0.4 | 2.2 |
| 100g tomato | 18 | 3.9 | 0.9 | 0.2 | 1.2 |
| 1 cherry tomato (~17g) | 3 | 0.7 | 0.2 | 0 | 0.2 |
| 1 cup tomato sauce | 74 | 18 | 3 | 0.5 | 4 |
| 1 cup tomato juice | 41 | 10 | 2 | 0.5 | 1 |
About these numbers
Tomatoes are 95% water — extremely calorie-dilute. The 18 kcal per 100g means a half-pound of tomatoes is under 50 kcal. Lycopene content (~3mg per medium tomato) is associated with prostate cancer prevention in epidemiological data. Cooking increases lycopene bioavailability — tomato sauce and paste are more lycopene-bioavailable than raw tomatoes.
Use the calculators
- Calorie Deficit Calculator — find how this portion fits your daily target
- Glycemic Load Calculator — compute exact GL for any serving size
- Macro Calculator — set protein, carb, fat splits for cut/maintain/bulk
- Net Carbs Calculator — useful for keto and T1D insulin dosing
Related foods
Frequently asked questions
- How many calories in a tomato?
- Medium tomato: 22 kcal. Cherry tomato: 3 kcal. Per cup chopped: 32 kcal. Tomato sauce: 74 kcal per cup. Tomato paste: 215 kcal per cup (concentrated).
- Are tomatoes good for weight loss?
- Excellent. Among the most calorie-dilute foods available. Cherry tomatoes as snacks, sliced tomatoes in salads, and tomato-based sauces (without added sugar) all fit any calorie target.
- Cooked vs raw tomatoes for lycopene?
- Cooked wins. Heat breaks down cell walls and frees lycopene for absorption. Tomato sauce, paste, and cooked tomato dishes deliver 2-4x more bioavailable lycopene than raw tomatoes. Add a small amount of olive oil (fat-soluble nutrient) for further absorption boost.
- Are tomatoes acidic enough to cause issues?
- For most people, no. Acid reflux sufferers may find raw tomatoes problematic; cooked is often better tolerated. Histamine-sensitive individuals (rare) may need to avoid tomatoes. For 99% of adults, tomatoes are well-tolerated and beneficial.
Track it
Stop estimating. Start tracking.
CalEye reads calories, protein, carbs, and fat from a photo of your plate — no barcode, no manual entry. Free on iOS.
Download CalEye free on iOS →