Red onion
1.1 g protein per 100 g, 1.1 g per 100 g.
Updated 2026-10-08 - data v2026-10-08.2
Estimated nutrition for Red onion, per 100 g and per 100 g (100 g).
Nutrition
| kcal | P | C | F | |
|---|---|---|---|---|
| Per 100 g | 40 | 1.1 | 9.3 | 0.1 |
| Per serving (100 g, 100 g) | 40 | 1.1 | 9.3 | 0.1 |
Protein per 100 kcal: 2.8 g est.
Cost
Est. cost per serving $0.30 est.
Est. cost midpoint $0.30 est.
Est. $ per 10 g protein: $2.73 est.
Diet and scores
Vegetarian, Vegan, Pescatarian, Gluten-Free, Dairy-Free
Longevity: none noted.
Recipes using this food
Nutrition values are estimates until a USDA record is attached. Not medical advice.
USDA FDC ID: not yet verified (est.)
Cite as: Macro Friendly Meals, "Red onion nutrition", https://macrofriendlymeals.com/foods/red-onion, data v2026-10-08.2.