Onion: nutrition facts and products

A bulb vegetable used fresh, dried or powdered.

Onion, raw contains 40 kcal per 100 g. A typical serving of 1 slice, medium, 1/8" thick (14 g) provides about 6 kcal.

Roughly 88% of its calories come from carbohydrates, with 10% from protein and 2% from fat (estimated with general energy factors).

That is more energy than the typical item in vegetables and vegetable products on FoodFactly, where the median is 35 kcal per 100 g across 866 foods.

Full details: Onion, raw nutrition facts.

40kcal per 100 g
1.1 gprotein
9.3 gcarbohydrates
0.1 gfat

Products containing onion

2,400 packaged products on FoodFactly list onion among their ingredients (Open Food Facts ingredient analysis).

FoodCaloriesProteinCarbsFat
Mashed potatoes Best American Foods 370 7.4 g 70.4 g 7.4 g
Homestyle Meatballs Roundy's 317 19.4 g 6.9 g 23.5 g
Italian Style Meatballs Roundy's 328 19.4 g 9.7 g 23.5 g
Flavored potato chips Roundy's 526 7 g 54.4 g 31.6 g
Petite diced tomatoes Roundys 24 0.81 g 5.7 g 0 g
Petite Diced Tomatoes With Sweet Onion Roundy's 25 0.83 g 5.8 g 0 g
Tomato Sauce Roundy's 33 1.6 g 6.6 g 0 g
Tomato Sauce Roundy's 0 0 g 13.4 g 0 g
Chicken Breast With Rib Meat Roudy's 181 9.9 g 11.9 g 10.4 g
Hot & Spicy Jalapenos Roundy's Select 107 0 g 25 g 0 g
Roundy's, california french style dressing, light Roundy's 200 0 g 40 g 3.3 g
Roundy's, light italian dressing, light Roundy's 117 0 g 10 g 8.3 g
Roundy's, ranch dressing, light Roundy's 267 0 g 10 g 23.3 g
Roundy's, select, vidalia onion dressing Roundy's 400 0 g 26.7 g 30 g
Ranch dressing Roundy's 433 0 g 6.7 g 46.7 g
Green Enchilada Sauce Roundy's 22 0 g 5.6 g 0 g
Roundy's, thick & chunky picante salsa, mild Roundy's 33 0 g 6.7 g 0 g
Roundy's, thick & chunky picante salsa, medium Roundy's 33 0 g 6.7 g 0 g
Roundy's, taco sauce, medium Roundy's 33 10 g 6.7 g 0 g
Select, Chipotle Garlic Salsa Roundy's 33 6.7 g 6.7 g 0 g
Select, Roasted Salsa Roja Roundy's 17 6.7 g 3.3 g 0 g
Select, Restaurant Style Salsa Roundy's 33 0 g 6.7 g 0 g
Roundy's, select, salsa verde Roundy's 33 0 g 6.7 g 0 g
Roundy's, select, black bean & corn salsa Roundy's 67 3.3 g 13.3 g 0 g
Beef Gravy Roundy's 42 1.7 g 5 g 1.7 g
Traditional Pasta Sauce Roundy's 64 1.6 g 8.8 g 1.6 g
Italian style pasta sauce Roundy's 56 1.6 g 8.8 g 2 g
Classic marinara sauce Roundy's 48 1.6 g 6.4 g 2 g
Chunky garden combo italian style pasta sauce Roundy's 70 1.6 g 10.2 g 2 g
Three Cheese Homestyle Pasta Sauce Roundy's 63 1.6 g 11.1 g 1.2 g
Garden Combination Chunky Pasta Sauce Roundy's 55 1.6 g 9.5 g 1.2 g
Roundy's, chunky pasta sauce, tomato, onion & garlic Roundy's 71 1.6 g 10.2 g 2.4 g
Roundy's, homestyle pasta sauce, mushroom Roundy's 55 1.6 g 10.2 g 1.2 g
Roundy's, pasta sauce, roasted garlic Roundy's 41 1.6 g 7.3 g 0.81 g
Classic alfredo cream sauce Roundy's 129 3.2 g 4.8 g 11.3 g
Roundy's, select, carolina barbeque sauce Roundy's 156 0 g 37.5 g 0 g
Roundy's, select, kansas city style barbeque sauce with brown sugar & molasses, savory sweetness & bold Roundy's 156 0 g 37.5 g 0 g
Smoky Barbeque Sauce, Cholesterol And Fat Free Roundy's 156 3.1 g 37.5 g 0 g
Roundy's, select, spicy chipotle barbeque sauce, smoke Roundy's 156 0 g 37.5 g 0 g
Roundy's, select, habanero barbeque sauce, savory sweetness & bold Roundy's 156 0 g 37.5 g 0 g
Steak Sauce Roundy's 67 0 g 13.3 g 0 g
Cocktail Sauce Roundy's 125 1.6 g 25 g 0.78 g
Roundy's, salsa, medium Roundy's 48 0 g 9.7 g 0 g
Roundy's, salsa, mild Roundy's 48 0 g 9.7 g 0 g
Roundy's, black bean dip, medium Roundy's 62 6.3 g 15.6 g 0 g
Organic Chicken Broth Simply Roundy's 2 0.42 g 0 g 0 g
Chicken Broth Simply Roundy's 1 0.18 g 0.18 g 0 g
Vegetable Broth Simply Roundy's 2 0 g 0.52 g 0 g

Per 100 g. Calories in kcal. n/a: not reported by the source.