1 piece (medium) of Grilled Onion (80 g) has 32 calories. That works out to 40 calories per 100 g. It contains 7.4 g of carbs, 0.9 g of protein, 0.1 g of fat and 1.4 g of fiber. Its 5.9 mg of Vitamin C covers 7% of the Daily Value. Its glycemic index is 30 (low), so it raises blood sugar slowly.

Grilled Onion Nutrition Facts

Selected: 100 g

KCAL / 100G

Carbs

9.3g

· 3% DV

Protein

1.1g

· 2% DV

Fat

0.1g

· 0% DV

Fiber

1.7g

· 6% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 88% · Protein 10% · Fat 2%

Grilled Onion Vitamins & Minerals

Vitamins

Vitamin C

7.4mg · 8% DV

0.12mg · 7% DV

Folate

19µg · 5% DV

0.05mg · 4% DV

Minerals

Phosphorus

29mg · 4% DV

Potassium ⭐

146mg · 4% DV

Calcium

23mg · 2% DV

Magnesium

10mg · 2% DV

How Nutritious Is Grilled Onion?

Nutrient density

Medium

40/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

46/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Grilled Onion Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Grilled Onion

To burn the 40 calories in 100 g:

🚶

10min

Walking (5 km/h)

🏃

4min

Running (8 km/h)

🚴

5min

Cycling

🏊

5min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

Is Grilled Onion Processed?

NOVA 2

Minimally Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Grilled Onion Contain Allergens?

No known major allergens

Gluten free

Dairy free

Eggs free

Peanuts free

Tree nuts free

Fish free

Soy free

Sesame free

Which Diets Is Grilled Onion Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Grilled Onion Fat Profile

SATURATED

0.03g

MONOUNSATURATED

0.01g

POLYUNSATURATED

0.02g

⚖️

Omega 6:3 ratio 2:1

Below the ideal 4:1 — a good omega balance.

Compare Grilled Onion

🧅vs🍅

Grilled Onion vs Tomato22 kcal more per 100 g

→🧅vs🥗

Grilled Onion vs Mixed Green Salad22 kcal more per 100 g

→🧅vs🫑

Grilled Onion vs Red Pepper9 kcal more per 100 g

→🧅vs🥄

Grilled Onion vs Boiled Beetroot4 kcal fewer per 100 g

→

Foods Similar to Grilled Onion

🍅

Tomato

18 kcal

🥗

Mixed Green Salad

18 kcal

🫑

Red Pepper

31 kcal

🥄

Boiled Beetroot

44 kcal

🫑

Green pepper

20 kcal

🥗

Potato Salad

110 kcal

🥗

Arugula

25 kcal

🥕🥦🍆

Oven-Roasted Mixed Vegetables

65 kcal

Frequently Asked Questions About Grilled Onion

How many calories are in grilled onion?

Grilled onion contains 40 calories per 100 g. That serving also provides 9.3 g of carbohydrates, 1.1 g of protein, and 0.1 g of fat.

Is grilled onion suitable for a vegan or gluten-free diet?

Yes, grilled onion is compatible with vegan and gluten-free diets. It is also listed as suitable for vegetarian, Paleo, Mediterranean, flexitarian, and omnivore eating patterns.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 22, 2026