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A round onion with papery golden-brown skin and a firm, layered white interior visible where it is cut.
●Low GI
★Natural

Frank onion Calories

Low-calorie aromatic allium with vitamin C and sulfur compounds.

In season: Spring · Summer · Autumn · Winter

CALORIES · 100 G

40kcal

GI

10low

POTASSIUM · 100 G

146mg

FIBER · 100 G

1.7g

Quick answer

1 piece (medium) of Frank onion (110 g) has 44 calories. That works out to 40 calories per 100 g. It contains 10.2 g of carbs, 1.2 g of protein, 0.1 g of fat and 1.9 g of fiber. Its 8.1 mg of Vitamin C covers 9% of the Daily Value. Its glycemic index is 10 (low), so it raises blood sugar slowly.

Frank onion Nutrition Facts

Selected: 1 piece (medium) · 110 g

44

KCAL / 110G

Carbs

10.2g

· 4% DV

Protein

1.2g

· 2% DV

Fat

0.1g

· 0% DV

Fiber

1.9g

· 7% 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%

Frank onion nutrition facts table · 1 piece (medium) (110 g)

NutrientAmount% DV
Calories44 kcal
Total fat0.1 g0%
Saturated fat0.05 g0%
Trans fat0 g
Sodium4.4 mg0%
Total carbohydrate10.2 g4%
Fiber1.9 g7%
Protein1.2 g2%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Medium Frank onion?

ServingAmountCalories
1 piece (medium)110 g44 kcal
1 slice (thick)12 g5 kcal
0.25 piece (quarter)28 g11 kcal
½ piece (half)55 g22 kcal
1 piece (small)70 g28 kcal
100 g100 g40 kcal
1 cup (diced)140 g56 kcal
1 piece (large)150 g60 kcal
1 cup (chopped)160 g64 kcal

Calculated from 40 calories per 100 g.

Frequently Asked Questions About Frank onion

Can you eat Frank onion raw?

Yes, Frank onion can be eaten raw. Slice it into salads, sandwiches, or dips; if its sharp flavor is too strong, soak the sliced onion briefly in cold water and drain it before serving.

How should you store Frank onion?

Store whole Frank onions in a cool, dry, well-ventilated place. Once cut or peeled, refrigerate the remaining onion in a sealed container and use it within a few days; keeping it damp can speed spoilage.

Can you freeze Frank onion?

Yes, Frank onion can be frozen, but thawed pieces become soft, so save them for cooked dishes rather than salads. Peel and chop the onion, pack it airtight in freezer-safe portions, and use it straight from frozen.

Why does Frank onion make your eyes water?

Cutting Frank onion releases sulfur compounds that can irritate the eyes. Use a sharp knife, chill the onion briefly beforehand, and chop it in a well-ventilated area; these steps may reduce tearing.

Does Frank onion taste different after cooking?

Yes, cooking Frank onion softens its sharpness and brings out a milder, sweeter flavor. It works in soups, roasts, and sautéed dishes; cook it over moderate heat so it softens without burning.

Can you eat Frank onion if it has sprouted?

Yes, a firm Frank onion with a small sprout is generally still edible if it has no mold or off smell. Remove the sprout if you prefer; discard the onion if it is soft, slimy, or spoiled.

Can Frank onion cause gas or bloating?

Yes, Frank onion can cause gas or bloating in some people because onions contain fermentable carbohydrates. If raw onion bothers you, try a smaller portion or eat it cooked, which is often easier to tolerate.

Can you use Frank onion instead of a regular onion in recipes?

Yes, Frank onion can usually replace regular onion in cooked recipes when a recipe simply calls for onion. Start with a similar amount, then adjust to taste, since the exact strength can vary between onions.

Is Frank onion safe for dogs to eat?

No, Frank onion is not safe for dogs. Onions contain compounds that can damage a dog's red blood cells, whether the onion is raw or cooked; contact a veterinarian if your dog has eaten some.

Should you wash Frank onion before cutting it?

Yes, wash Frank onion after peeling and before chopping to remove dirt without carrying it from the outer skin onto the edible layers. Dry it before cutting, and use a clean knife and cutting board.

Frank onion Vitamins & Minerals

Vitamins

Vitamin C

8.14mg · 9% DV

B6

0.13mg · 8% DV

Folate

20.9µg · 5% DV

B1

0.05mg · 4% DV

Minerals

Manganese

0.14mg · 6% DV

Potassium ⭐

161mg · 5% DV

Phosphorus

32mg · 5% DV

Copper

0.04mg · 4% DV

Sodium

4.4mg · 0% DV

Frank onion Glycemic Index

GLYCEMIC INDEX

10
Low
0 Low5570100

GLYCEMIC LOAD

1.1
Low

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

How to Burn Off Frank onion

To burn the 44 calories in 1 piece (medium) (110 g):

🚶

11min

Walking (5 km/h)

🏃

4min

Running (8 km/h)

🚴

6min

Cycling

🏊

5min

Swimming

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

What is Frank onion?

Frank onion is an onion variety used much like other culinary onions. The information available does not identify a particular region of origin. It has the familiar pungent aroma of an allium; raw, it is crisp and sharp, while cooking softens its texture and brings out a sweeter flavour.

Use it sliced in salads and sandwiches, or cook it into soups, sauces and everyday meals. It fits naturally into a wide range of cuisines, from home cooking to grilled dishes. It is low in calories, with 40 calories per 100 g. If you prefer a gentler raw bite, slice it thinly and briefly soak it in cold water before serving.

How Nutritious Is Frank onion?

Nutrient density

Medium

42/ 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.

Is Frank onion Processed?

NOVA 1

Unprocessed

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 Frank 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 Frank 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

✓ Suitable

Low FODMAP

— Not suitable

Frank onion Fat Profile

SATURATED

0.05g

MONOUNSATURATED

0.01g

POLYUNSATURATED

0.02g

Compare Frank onion

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Nutrition data compiled from USDA FoodData Central and scientific sources.