Carbs In › Vegetables

Carbs in Onions

6.1g net carbs per 1/2 cup chopped (80g)
Keto in Moderation

Full guide: Is Onions keto-friendly?

Nutrition Facts

Nutrient Per 1/2 cup chopped (80g) Per 100g
Calories 32 kcal 40 kcal
Total carbs 7.4g 9.3g
Fiber 1.4g 1.7g
Net carbs 6.1g 7.6g
Sugars 3.4g 4.2g
Protein 0.9g 1.1g
Fat 0.1g 0.1g

Is Onions Keto?

A 1/2 cup chopped (80g) serving of onions has 6.1g of net carbs (7.4g total carbs minus 1.4g fiber). That is workable on keto in a controlled portion but adds up quickly if you overdo it.

To stay inside a 5g net-carb budget, keep the portion to about 66g of onions. Track it against your daily total and pair it with higher-fat, lower-carb foods so a single serving does not use up your whole carb allowance.

Nutrition data: USDA FoodData Central, Onions, raw (FDC ID 170000).

More Vegetables, Ranked by Net Carbs

Kale 0.1g net Spinach 0.4g net Lettuce 0.8g net Garlic 0.9g net Green Onions 1.2g net Celery 1.4g net Mushrooms 1.6g net Radishes 2.1g net Asparagus 2.4g net Eggplant 2.4g net Zucchini 2.4g net Cabbage 2.9g net Cauliflower 3.2g net Tomatoes 3.3g net Broccoli 3.6g net Cucumber 3.7g net Carrots 4.1g net Bell Peppers 4.3g net Green Beans 4.3g net Okra 4.3g net Brussels Sprouts 4.5g net Spaghetti Squash 5.2g net Turnips 6g net Artichokes 6.1g net Pumpkin 7g net Beets 9.2g net Peas 12.8g net Butternut Squash 13.6g net Parsnips 17.4g net Sweet Potato 22.2g net Corn 24.2g net Potato 26.6g net