Carbs in Watermelon (Low-Calorie Fruit)
How many carbs are in watermelon (low-calorie fruit)?
Watermelon (Low-Calorie Fruit) has 7.2g net carbs per 100g — 7.6g total carbs minus 0.4g fiber — plus 0.6g protein, 0.1g fat, and 30 calories. 1 cup diced (152g) works out to about 10.9g net carbs and 46 calories. That makes watermelon (low-calorie fruit) relatively low in net carbs and lower than the typical fruit, which averages about 17.6g net carbs per 100g. At this carb count, watermelon (low-calorie fruit) is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
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Watermelon (Low-Calorie Fruit) runs higher in carbs, so portions matter. CarbMeNot tracks every gram from a photo, so you stay under your daily limit without the math.
Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is watermelon (low-calorie fruit) keto-friendly?
Yes, watermelon (low-calorie fruit) can fit a keto diet in moderate portions. It has 7.2g net carbs per 100g (7.6g total carbs − 0.4g fiber). A typical serving — 1 cup diced (152g) — is about 10.9g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other fruits and meals.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 cup diced (152g) | 10.9g | 11.6g | 0.9g | 46 |
| 100 g (3.5 oz) | 7.2g | 7.6g | 0.6g | 30 |
| 1 oz (28 g) | 2g | 2.1g | 0.2g | 8 |
How many calories are in watermelon (low-calorie fruit)?
Watermelon (Low-Calorie Fruit) has 30 calories per 100g. 1 cup diced (152g) has about 46 calories. That's alongside 0.6g protein, 0.1g fat, and 7.2g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 30 |
| Total carbs | 7.6g |
| Net carbs | 7.2g |
| Fiber | 0.4g |
| Sugar | 6.2g |
| Sugar alcohols | 0g |
| Protein | 0.6g |
| Fat | 0.1g |
| Sodium | 1mg |
| Potassium | 112mg |
Source: Manufacturer-reported values (fruits). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in watermelon (low-calorie fruit)?
- Watermelon (Low-Calorie Fruit) has 7.6g of total carbs and 7.2g of net carbs per 100 grams.
- How many net carbs are in watermelon (low-calorie fruit)?
- Watermelon (Low-Calorie Fruit) has 7.2g of net carbs per 100 grams (total carbs 7.6g minus 0.4g fiber).
- Is watermelon (low-calorie fruit) keto-friendly?
- Yes, watermelon (low-calorie fruit) can fit a keto diet in moderate portions. It has 7.2g net carbs per 100g (7.6g total carbs − 0.4g fiber). A typical serving — 1 cup diced (152g) — is about 10.9g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other fruits and meals.
- How many calories are in watermelon (low-calorie fruit)?
- Watermelon (Low-Calorie Fruit) has 30 calories per 100 grams.
- How many carbs are in 1 cup diced (152g) of watermelon (low-calorie fruit)?
- 1 cup diced (152g) of watermelon (low-calorie fruit) (152g) has about 10.9g net carbs, 11.6g total carbs, and 46 calories.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.