Carbs in Tomato
Keto-friendlyTomato (per 100 g) contains 4g total carbs, 2.4g net carbs, 0g fat, 0.8g protein, and 20 calories.
Last updated June 10, 2026 · Reviewed by Jordan Lee, RD, Registered Dietitian
2.4g
Net carbs
4g
Total carbs
1.6g
Fiber
0.8g
Protein
0g
Fat
20
Calories
Values per 100 g.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 medium tomato | 3g | 4.9g | 1g | 25 |
| 100 g (3.5 oz) | 2.4g | 4g | 0.8g | 20 |
| 1 oz (28 g) | 0.7g | 1.1g | 0.2g | 6 |
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 20 |
| Total carbs | 4g |
| Net carbs | 2.4g |
| Fiber | 1.6g |
| Sugar | 3.2g |
| Sugar alcohols | 0g |
| Protein | 0.8g |
| Fat | 0g |
| Sodium | 16mg |
| Potassium | 0mg |
Source: Open Food Facts (Maestri). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in tomato?
- Tomato has 4g of total carbs and 2.4g of net carbs per 100 grams.
- How many net carbs are in tomato?
- Tomato has 2.4g of net carbs per 100 grams (total carbs 4g minus 1.6g fiber).
- Is tomato keto-friendly?
- Yes — with 2.4g net carbs per 100g, tomato fits a ketogenic diet in normal portions.
- How many calories are in tomato?
- Tomato has 20 calories per 100 grams.
- How many carbs are in 1 medium tomato of tomato?
- 1 medium tomato of tomato (123g) has about 3g net carbs, 4.9g total carbs, and 25 calories.
