Carbs in Water
Keto-friendlyWater (per 100 g) contains 3.1g total carbs, 1g net carbs, 0.2g fat, 2.6g protein, and 19 calories.
Last updated June 10, 2026 · Reviewed by Jordan Lee, RD, Registered Dietitian
1g
Net carbs
3.1g
Total carbs
2.1g
Fiber
2.6g
Protein
0.2g
Fat
19
Calories
Values per 100 g.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 100 g (3.5 oz) | 1g | 3.1g | 2.6g | 19 |
| 1 oz (28 g) | 0.3g | 0.9g | 0.7g | 5 |
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 19 |
| Total carbs | 3.1g |
| Net carbs | 1g |
| Fiber | 2.1g |
| Sugar | 0g |
| Sugar alcohols | 0g |
| Protein | 2.6g |
| Fat | 0.2g |
| Sodium | 113mg |
| Potassium | 312mg |
Source: USDA FoodData Central (SR Legacy). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in water?
- Water has 3.1g of total carbs and 1g of net carbs per 100 grams.
- How many net carbs are in water?
- Water has 1g of net carbs per 100 grams (total carbs 3.1g minus 2.1g fiber).
- Is water keto-friendly?
- Yes — with 1g net carbs per 100g, water fits a ketogenic diet in normal portions.
- How many calories are in water?
- Water has 19 calories per 100 grams.
