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
Mushroom Pasta Sauce Spartan 55 1.6 g 10.2 g 1.2 g
Pasta Sauce Meat Flavored Spartan 62 1.6 g 10.2 g 2 g
Chunky Garden Combo Pasta Sauce Spartan 55 1.6 g 10.2 g 1.2 g
Three Cheese Pasta Sauce Spartan 63 1.6 g 11.1 g 1.2 g
Spaghetti In Tomato & Cheese Sauce Spartan 74 2.1 g 14.5 g 0.83 g
Spaghetti Rings Pasta In Tomato & Cheese Sauce Spartan 62 2.1 g 13.2 g 0.41 g
Spaghetti Rings & Meatballs Pasta In Tomato Sauce Spartan 91 4 g 11.9 g 3.2 g
Mini Beef Ravioli Spartan 96 3.3 g 13.8 g 2.9 g
Tomato Sauce Spartan 33 1.6 g 6.6 g 0 g
Tomato Sauce Spartan 33 1.6 g 6.6 g 0 g
Tomato Sauce Spartan 33 1.6 g 6.6 g 0 g
Rice cakes Spartan 409 9.1 g 81.8 g 4.6 g
Alfredo Sauce Creamy Spartan 117 1.7 g 5 g 10 g
Alfredo Sauce, Roasted Garlic Spartan 117 1.7 g 5 g 10 g
Diced Tomatoes Spartan 25 0.83 g 5.8 g 0 g
Rice mix Spartan 343 10 g 71.4 g 1.4 g
Rice mix Spartan 343 8.6 g 71.4 g 1.4 g
Rice Mix, Spanish Style Spartan 429 10.7 g 91.1 g 1.8 g
Long grain & wild rice mix Spartan 333 8.8 g 73.7 g 0 g
Quick rice garden vegetable with peas, carrots & corn Spartan 99 2 g 18.5 g 1.7 g
Refried Beans Traditional Spartan 92 5 g 15.8 g 0.83 g
Refried bens Spartan 81 5.7 g 15.3 g 0 g
Traditional salsa Spartan 30 0 g 6.1 g 0 g
Traditional salsa Spartan 30 0 g 6.1 g 0 g
Traditional taco sauce Spartan 62 0 g 12.5 g 0 g
Cheesy Skillets Dinner Kit, Deluxe Cheeseburger Pasta & Sauce Mix Spartan 329 10 g 42.9 g 12.9 g
Chicken & Broccoli Pasta & Sauce Mix Spartan 333 10.7 g 48.8 g 10.7 g
Spartan, texas toast, garlic Spartan 360 6 g 38 g 20 g
Condensed Soup Spartan 48 2.4 g 7.2 g 1.2 g
Condensed Soup Spartan 88 1.6 g 8 g 5.6 g
Condensed Soup Spartan 112 4.8 g 16 g 3.2 g
Condensed Soup Spartan 40 1.6 g 6.4 g 1.2 g
Condensed Soup Spartan 48 2.4 g 6.4 g 1.6 g
Condensed Soup Spartan 80 1.6 g 12 g 2.4 g
Condensed Soup Spartan 96 2.4 g 8 g 6.4 g
Condensed Soup Spartan 80 1.6 g 8 g 4.8 g
Condensed Soup Spartan 80 1.6 g 8 g 4.8 g
Chicken Broth Spartan 4 0.42 g 0.42 g 0.21 g
Condensed Soup Spartan 64 1.6 g 8.8 g 2 g
Condensed Soup Spartan 64 1.6 g 9.6 g 2 g
Condensed Soup Spartan 46 1.8 g 8.4 g 0.61 g
Condensed Soup Spartan 76 4 g 11.3 g 1.7 g
Condensed Soup Spartan 72 3.2 g 10.4 g 1.6 g
Soup Spartan 37 2.9 g 4.9 g 0.82 g
Chunky Clam Chowder Spartan 110 2.9 g 10.2 g 6.5 g
Chunky Soup Spartan 73 4.1 g 9 g 2.9 g
Tomato Sauce Spartan 33 1.6 g 6.6 g 0 g
Tomato Sauce Spartan 33 1.6 g 6.6 g 0 g

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