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
Four Leaf Balsamic, Vinaigrette & Marinade Private Selection 500 0 g 10 g 53.3 g
Dressing & Marinade, White Balsamic & Honey Private Selection 433 0 g 13.3 g 43.3 g
French Fried Onions Kroger 643 0 g 42.9 g 50 g
Beef Gravy Psst... 42 1.7 g 6.7 g 0.83 g
Psst, Turkey Gravy The Kroger Co. 42 1.7 g 5 g 1.7 g
Chicken Gravy Psst 58 0 g 5 g 4.2 g
Stroganoff Skillet Meals Kroger 355 9.7 g 71 g 3.2 g
Butter & herb instant mashed potatoes Kroger 348 8.7 g 78.3 g 2.2 g
Potatoes With Cheese Sauce Mix, Three Cheese Kroger 357 7.1 g 78.6 g 0 g
Potatoes With Real Sour Cream, Sour Cream & Chives Kroger 357 7.1 g 75 g 1.8 g
Au gratin potatoes with cheese sauce mix Kroger 357 7.1 g 78.6 g 0 g
Cream Of Mushroom P$$T 56 1.6 g 7.2 g 2.4 g
Chicken noodle condensed soup Kroger 48 2.4 g 6.4 g 1.2 g
Tomato Condensed Soup P$$T 65 1.6 g 14.6 g 0 g
Tomato sauce Psst... 33 1.6 g 6.6 g 0 g
Kroger, break-free, real egg product Kroger 54 10.9 g 2.2 g 0 g
Texas Toast Garlic Kroger 360 6 g 38 g 20 g
Marinara, Hearty Traditional Sauce Private Selection 48 2.4 g 8.8 g 0.4 g
Napoletana Roasted Garlic Sauce Private Selection 39 1.9 g 7 g 0.32 g
Raspberry Vinaigrette Private Selection 533 0 g 20 g 50 g
Marinara Pasta Sauce Simple Truth Organic 59 1.6 g 7.8 g 2.4 g
Chicken Noodle Condensed Soup Kroger 57 2.4 g 8.1 g 1.6 g
Chicken Noodle Condensed Soup Kroger 39 1.9 g 5.8 g 0.96 g
Vegetable Beef Condensed Soup Kroger 73 4.1 g 13 g 0.81 g
Fat free cream of mushroom condensed soup Kroger 64 1.6 g 8.8 g 2 g
Chicken Noodle Soup Kroger 37 2.9 g 4.9 g 0.82 g
Roast Beef With Gravy Kroger 93 13.2 g 4.6 g 2.3 g
Kroger, potato chips, bold mesquite bbq Kroger 536 3.6 g 57.1 g 32.1 g
Kroger, potato chips, sour cream & onion Kroger 536 7.1 g 53.6 g 32.1 g
Crunchy Fish Sticks Kroger 231 11.5 g 24.4 g 10.3 g
Beef Ravioli In Tomato & Meat Sauce Kroger 41 1.4 g 5.7 g 1.4 g
Spaghetti Rings Pasta With Meatballs In Tomato Sauce Kroger 37 1.6 g 4.7 g 1.3 g
Chili With Beans Kroger 120 6.8 g 14 g 4 g
Mini Beef Ravioli In Tomato & Meat Sauce Kroger 40 1.4 g 5.9 g 1.2 g
Beef Ravioli In Tomato & Meat Sauce Kroger 42 1.4 g 5.9 g 1.4 g
Mellow Black Bean & Corn Salsa Private Selection 89 0 g 22.2 g 0 g
Bold & Black Bean & Corn Salsa Private Selection 89 0 g 22.2 g 0 g
Alfredo, Rich Cream Sauce Private Selection 125 3.1 g 4.7 g 10.9 g
Restaurant Style Gourmet Salsa Private Selection 34 0 g 6.9 g 0 g
Chicken Wings Kroger 215 12.9 g 11.8 g 10.8 g
Kroger, grilled & glazed chicken breast fillets with rib meat & seasoning, teriyaki Kroger 125 17.9 g 8 g 2.7 g
Original Tomato Ketchup Kroger 118 0 g 29.4 g 0 g
Grilled Chicken And Sausage Gumbo, Ready To Serve Soup Kroger 45 2.9 g 6.1 g 0.82 g
Chunky Chicken Corn Chowder Kroger 32 1.3 g 3.3 g 1.5 g
Savory Pot Roast Ready To Serve Soup Kroger 45 2.5 g 7.8 g 0.41 g
Chunky Chicken And Rice Soup P$$T... 29 1.2 g 4.9 g 0.41 g
Freestone Peach & Mango Salsa Private Selection 67 0 g 13.3 g 0 g
Mini Corn Dogs Kroger 263 7.9 g 32.9 g 11.8 g

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