Carbs in Sweet Onion
Keto-friendlySweet Onion (per 100 g) contains 7.5g total carbs, 6.6g net carbs, 0.1g fat, 0.8g protein, and 32 calories.
Last updated June 10, 2026 · Reviewed by Jordan Lee, RD, Registered Dietitian
6.6g
Net carbs
7.5g
Total carbs
0.9g
Fiber
0.8g
Protein
0.1g
Fat
32
Calories
Values per 100 g.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 100 g (3.5 oz) | 6.6g | 7.5g | 0.8g | 32 |
| 1 oz (28 g) | 1.8g | 2.1g | 0.2g | 9 |
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 32 |
| Total carbs | 7.5g |
| Net carbs | 6.6g |
| Fiber | 0.9g |
| Sugar | 5g |
| Sugar alcohols | 0g |
| Protein | 0.8g |
| Fat | 0.1g |
| Sodium | 8mg |
| Potassium | 119mg |
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 sweet onion?
- Sweet Onion has 7.5g of total carbs and 6.6g of net carbs per 100 grams.
- How many net carbs are in sweet onion?
- Sweet Onion has 6.6g of net carbs per 100 grams (total carbs 7.5g minus 0.9g fiber).
- Is sweet onion keto-friendly?
- Yes — with 6.6g net carbs per 100g, sweet onion fits a ketogenic diet in normal portions.
- How many calories are in sweet onion?
- Sweet Onion has 32 calories per 100 grams.
