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Cooked onion calories

Cooked onion, boiled, drained, unsalted
92kcal
1 cup · 210 g, boiled, drained, unsalted
11%protein
2.9 gProtein
21 gCarbs
0.4 gFat
How to burn off 92 kcal
—Walking, brisk
—Jogging
—Cycling, moderate
—Swimming
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Nutrition facts
Boiled, drained, unsalted · per 210 g
Calories92 kcal
Protein2.9 g
Carbohydrate21 g
Fat0.4 g
Saturated fat0.1 g
Cholesterol0 mg
Sodium6 mg
Potassium349 mg
Iron0.5 mg

Source: USDA FoodData Central

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Verified nutrition data

Numbers on this page come from USDA FoodData Central, the U.S. Department of Agriculture’s food composition database, and from manufacturer labels where a branded product is named. Last verified September 2026. How we verify our data →

Similar foods
Calories per 100 g
Red OnionRed Onion44 kcal / 100 gCooked CarrotsCooked Carrots35 kcal / 100 gCooked BroccoliCooked Broccoli35 kcal / 100 g

More vegetables & salad → All calorie guides →

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Cooked onion FAQs
How many calories are in cooked onions?

One cup of boiled, drained onion is 92 calories. A medium onion cooked the same way is 41 calories, and a large one is 56.

Are cooked onions good for weight loss?

A cup has 92 calories, 0.4 g of fat and 21.3 g of carbs, with 1.4 g of fiber per 100 g, so it fills a plate for few calories.

Cooked onion vs red onion: which has more calories?

Both land at 44 calories per 100 g, so boiling and draining without added fat leaves the count unchanged.

How many carbs and how much sugar are in cooked onions?

Per 100 g there are 10.2 g of carbs, of which 4.7 g are sugars. A full cup has 21.3 g of carbs and 9.9 g of sugars.