Carbs in Lemon
Keto-friendlyHow many carbs are in lemon?
Lemon has 5.4g net carbs per 100g — 16g total carbs minus 10.6g fiber — plus 1.5g protein, 0.3g fat, and 47 calories. With this carb count, lemon fits a keto or low-carb diet (usually 20–50g net carbs per day) in normal portions. Values are per per 100 g, sourced from USDA FoodData Central; net carbs are computed by CarbMeNot.
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Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is lemon keto-friendly?
Yes, lemon can fit a keto diet in moderate portions. It has 5.4g net carbs per 100g (16g total carbs − 10.6g fiber). On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other foods and meals.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 100 g (3.5 oz) | 5.4g | 16g | 1.5g | 47 |
| 1 oz (28 g) | 1.5g | 4.5g | 0.4g | 13 |
How many calories are in lemon?
Lemon has 47 calories per 100g. That's alongside 1.5g protein, 0.3g fat, and 5.4g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 47 |
| Total carbs | 16g |
| Net carbs | 5.4g |
| Fiber | 10.6g |
| Sugar | 4.2g |
| Sugar alcohols | 0g |
| Protein | 1.5g |
| Fat | 0.3g |
| Sodium | 6mg |
| Potassium | 160mg |
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 lemon?
- Lemon has 16g of total carbs and 5.4g of net carbs per 100 grams.
- How many net carbs are in lemon?
- Lemon has 5.4g of net carbs per 100 grams (total carbs 16g minus 10.6g fiber).
- Is lemon keto-friendly?
- Yes, lemon can fit a keto diet in moderate portions. It has 5.4g net carbs per 100g (16g total carbs − 10.6g fiber). On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other foods and meals.
- How many calories are in lemon?
- Lemon has 47 calories per 100 grams.
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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.