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
Chicken Broth College Inn 2 0 g 0.42 g 0 g
Broth chicken College Inn 6 0 g 0.42 g 0.42 g
Chicken Broth Del Monte Foods Inc. 5 0 g 0.24 g 0.49 g
College inn, beef broth Del Monte 5 0.97 g 0.24 g 0 g
Garden Vegetable Broth College Inn 8 0 g 2.1 g 0 g
Extra Thick & Zesty Sauce Contadina 41 1.6 g 8.2 g 0 g
Roma Style Tomatoes Sauce With Italian Herbs Contadina 41 1.6 g 8.2 g 0 g
Roma Tomato Sauce Contadina 33 1.6 g 6.6 g 0 g
Tomato sauce Contadina 33 1.6 g 6.6 g 0 g
Contadina Tomato Sauce Contadina 33 1.6 g 6.6 g 0 g
Pizza Sauce Contadina 48 1.6 g 9.5 g 0 g
Pizza Squeeze Pizza Sauce Contadina 48 1.6 g 9.5 g 0 g
Pizza Sauce With Natural Sea Salt Contadina 48 1.6 g 9.5 g 0 g
Roma style tomatoes pizza sauce Contadina 48 1.6 g 9.5 g 0 g
Pepperoni pizza sauce, pepperoni Contadina 63 1.6 g 11.1 g 0.79 g
Diced Tomatoes With Italian Herbs Contadina 37 0.82 g 9 g 0 g
Spaghetti Sauce Contadina 56 1.6 g 9.6 g 1.2 g
Deluxe Marinara Sauce Contadina 56 0.8 g 8.8 g 1.2 g
Marinara Sauce Contadina 32 1.6 g 6.5 g 0.4 g
Sweet & Sour Sauce With Pineapple Contadina 136 0 g 30.3 g 1.5 g
Tomato Sauce Contadina 33 1.6 g 6.6 g 0 g
Culinary Broth, White Wine & Herb College Inn 4 0.42 g 0.83 g 0 g
Chicken Broth Del Monte Foods Inc. 2 0.42 g 0 g 0 g
Chicken Broth College Inn 2 0.42 g 0 g 0 g
Beef Broth College Inn 6 1.7 g 0 g 0 g
Bold Stock Tender Beef College Inn 12 2.5 g 0.42 g 0 g
Rotisserie Chicken Bold Stock College Inn 12 1.3 g 0.83 g 0.21 g
Tomato sauce with basil, garlic & oregano Del Monte 32 1.6 g 6.4 g 0 g
Beef Broth College Inn 6 0.83 g 0.42 g 0.21 g
Petite Cut Diced Tomatoes Del Monte 28 0.79 g 5.6 g 0 g
Petite diced tomatoes with green chilies Del Monte 24 0.79 g 5.6 g 0 g
Seafood Cocktail Sauce Del Monte 128 1.3 g 30.8 g 0 g
Del monte, pasta sauce, traditional Del Monte 48 0.8 g 9.6 g 0.8 g
Garlic & Onion Pasta Sauce Del Monte 56 1.6 g 11.2 g 0.8 g
Green Pepper & Mushroom Pasta Sauce Del Monte 56 1.6 g 9.6 g 0.8 g
Mushroom Garden Quality Del Monte 48 0.8 g 8.8 g 0.8 g
Pasta Sauce, Meat Del Monte 56 1.6 g 9.6 g 0.8 g
Del monte, pasta sauce, tomato & basil Del Monte 48 1.6 g 9.6 g 0.4 g
Italian Herb Chunky Pasta Sauce Del Monte 56 0.81 g 10.5 g 0.81 g
Garlic & Herb Chunky Pasta Sauce Del Monte 48 0.81 g 9.7 g 0.81 g
Fire-Roasted Corn Blend Del Monte 56 0.8 g 10.4 g 0.8 g
Cut Savory Green Beans With Mushrooms Del Monte Quality 17 0.83 g 3.3 g 0 g
Garden Vegetable Broth Del Monte Foods Inc. 8 0 g 1.7 g 0 g
New Orleans Style Vegetables Del Monte 73 1.6 g 12.2 g 1.6 g
Meal Toppers Pot Pie Vegetable Medley Del Monte 88 1.8 g 9.7 g 4.4 g
Diced tomatoes no salt added Del Monte 40 0.79 g 8.7 g 0 g
Salsa Del Monte 16 0 g 3.1 g 0 g
Chicken Broth College Inn 6 0.42 g 0.42 g 0.42 g

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