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How Many Calories in Onions, Frozen, Whole, Unprepared?

✓ Nutrition data reviewed against USDA FoodData Central and Public Health England guidance by Jordan Morley, Editorial Reviewer. Last reviewed: 27 October 2026.

Fact-checked against original USDA source data by Jordan Morley, Editorial Reviewer. Not a registered dietitian — nutrition figures are sourced directly from USDA FoodData Central, not independently assessed medical advice.

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35
calories per 100g
33 calories per 0.33 package (95g)
0.9gProtein
8.4gCarbs
0.1gFat
1.7gFibre

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⚖ Kitchen Scales

Quick reference — common serving sizes

AmountCaloriesProtein
1 oz (28g)10 kcal0.3g
100g35 kcal0.9g
grams
35kcal
0.9gprotein
8.4gcarbs
0.1gfat
1.7gfibre

A onions, frozen, whole, unprepared contains 35 calories per 100g. A typical 0.33 package (95g) provides about 33 calories. Onions, Frozen, Whole, Unprepared is low in calories. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.

Onions, Frozen, Whole, Unprepared Nutrition Facts

NutrientPer 100gPer serving (95g)
Calories35 kcal33 kcal
Protein0.9g0.9g
Carbohydrates8.4g8.0g
of which Sugars3.8g3.6g
Fat0.1g0.1g
of which Saturates0.0g0.0g
Fibre1.7g1.6g
Sodium10.0mg10mg
Potassium142.0mg135mg
Calcium36.0mg34mg
Iron0.5mg0.5mg
Vitamin C8.0mg7.6mg
Vitamin A0.0µg0µg
Selenium0.4µg0µg
Riboflavin (B2)0.0mg0.0mg

% of Daily Value (per 100g)

Based on a standard 2,000-calorie reference diet — the same basis used on nutrition labels in the US and UK.

Useful for tracking onions, frozen, whole, unprepared

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Have a cat or dog? Check whether onions, frozen, whole, unprepared is safe for your dog or safe for your cat before sharing. Also check the full ingredient breakdown and food safety guide for pregnancy and storage advice. Use a meal prep container set to portion out onions, frozen, whole, unprepared for the week. Tracking supplements too? Check drug and supplement interactions before combining anything new.

Good to know

Cooking method matters here too — boiling can leach some water-soluble vitamins into the cooking water, while steaming or roasting tends to retain more.

Does onions, frozen, whole, unprepared fit your diet?

Weight management

At 35 calories per 100g, onions, frozen, whole, unprepared is calorie-light relative to its volume, which can help keep a meal within a calorie target without needing very small portions.

Frequently Asked Questions

How many calories in onions, frozen, whole, unprepared per 100g?

Onions, Frozen, Whole, Unprepared contains 35 calories per 100g, based on USDA reference data.

Is onions, frozen, whole, unprepared high in calories?

A 0.33 package of onions, frozen, whole, unprepared (95g) has around 33 calories — roughly 2% of a 2,000-calorie daily intake.

Is onions, frozen, whole, unprepared good for weight loss?

At 35 calories per 100g, onions, frozen, whole, unprepared is relatively low in calories and can fit well into a weight-loss diet. A 0.33 package provides about 33 calories.

How much protein is in onions, frozen, whole, unprepared?

Onions, Frozen, Whole, Unprepared contains 0.9g of protein per 100g.

Is onions, frozen, whole, unprepared a good source of fibre?

Onions, Frozen, Whole, Unprepared is relatively low in fibre at 1.7g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.

How does onions, frozen, whole, unprepared compare to beans, snap, green, cooked, boiled, drained, without salt?

Onions, Frozen, Whole, Unprepared has 35 calories per 100g, close to beans, snap, green, cooked, boiled, drained, without salt at 35 — 0 calories fewer per 100g. See the full macro breakdown above.

How many servings of onions, frozen, whole, unprepared for 20g of protein?

With 0.9g of protein per 100g, you'd need roughly 2222g of onions, frozen, whole, unprepared to reach 20g of protein

Foods with a similar calorie count

Other vegetables closest to onions, frozen, whole, unprepared by calories per 100g:

FoodCaloriesProteinCarbsFat
Onions, Frozen, Whole, Unprepared (this page)35 kcal0.9g8.4g0.1g
Beans, Snap, Green, Cooked, Boiled, Drained, without Salt35 kcal1.9g7.9g0.3g
Broccoli, Cooked, Boiled, Drained, without Salt35 kcal2.4g7.2g0.4g
Carrots, Cooked, Boiled, Drained, without Salt35 kcal0.8g8.2g0.2g
Eggplant, Cooked, Boiled, Drained, without Salt35 kcal0.8g8.7g0.2g
Seaweed, Laver, Raw35 kcal5.8g5.1g0.3g
Tomato Products, Canned, Sauce, with Mushrooms35 kcal1.4g8.4g0.1g

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Last updated:

Nutrition data: USDA FoodData Central (public domain, CC0 1.0). Values are per 100g unless stated.