French Onion Soup
Packaged product Soups and Sauces Frontier Soups
Data check: the calories do not match the protein, carbohydrate and fat values. The source data may contain an error, so treat these values with caution.
French Onion Soup contains 310 kcal per 100 g. A serving, 0.25 cup, 29 g (29 g) provides about 90 kcal.
Roughly 69% of its calories come from carbohydrates, with 31% from protein and 0% from fat (estimated with general energy factors).
That is more energy than the typical item in soups and sauces on FoodFactly, where the median is 60 kcal per 100 g across 2,987 products.
100 g provides 35% of the Daily Value for iron, 18% of the Daily Value for Vitamin C and 16% of the Daily Value for calcium.
The values are label data submitted by the manufacturer to USDA FoodData Central.
Nutrition facts
| Nutrient | Amount per 100 g | % DV |
|---|---|---|
| Calories L | 310 kcal | |
| Total fat L | 0 g | 0% |
| Saturated fat L | 0 g | 0% |
| Trans fat L | 0 g | |
| Cholesterol L | 0 mg | 0% |
| Sodium L | 0 mg | 0% |
| Total carbohydrates L | 37.9 g | 14% |
| Dietary fiber L | 3.4 g | 12% |
| Total sugars L | 3.5 g | |
| Added sugars L | 0 g | 0% |
| Protein L | 17.2 g | 34% |
| Vitamin A L | 0 µg | 0% |
| Vitamin C L | 16.6 mg | 18% |
| Vitamin E L | 0 mg | 0% |
| Vitamin K L | 0 µg | 0% |
| Thiamin (B1) L | 0 mg | 0% |
| Riboflavin (B2) L | 0 mg | 0% |
| Vitamin B6 L | 0 mg | 0% |
| Folate (B9) L | 0 µg | 0% |
| Vitamin B12 L | 0 µg | 0% |
| Choline L | 0 mg | 0% |
| Calcium L | 207 mg | 16% |
| Iron L | 6.2 mg | 35% |
| Magnesium L | 0 mg | 0% |
| Phosphorus L | 0 mg | 0% |
| Zinc L | 0 mg | 0% |
| Copper L | 0 mg | 0% |
| Manganese L | 0 mg | 0% |
| Selenium L | 0 µg | 0% |
% DV: percent of the FDA Daily Value for adults (reference amounts). Letters show how each value was obtained: M measured, C calculated, L label, Z assumed zero, I imputed. Vitamins and minerals not listed were not reported by the source.
Nutritional breakdown
- Protein 31%
- Carbohydrates 69%
Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).
Vitamins and minerals, % Daily Value per 100 g
Nutritional insights
- Protein17.2 gin the top quarter of soups and sauces (median 2.4 g)
- Fiber3.4 gin the top quarter of soups and sauces (median 1 g)
- Sugars3.5 gin the top quarter of soups and sauces (median 1.6 g)
- Fat0 gin the lowest quarter of soups and sauces (median 1.8 g)
- Saturated fat0 gin the lowest quarter of soups and sauces (median 0.41 g)
- Sodium0 mgin the lowest quarter of soups and sauces (median 315 mg)
- Protein per 100 kcal5.5 gprotein density, useful for comparing foods with different calorie levels
Full nutrient profile
Sugars and starch (1)
| Starch L | 0 g |
|---|
Other components (2)
| Caffeine L | 0 mg |
|---|---|
| Vitamin A, IU L | 1,030 IU |
Values by source
More than one dataset describes this food. FoodFactly keeps each source's values separately instead of blending them. The headline values above come from USDA FoodData Central: Branded Foods.
| Per 100 g | Open Food Facts | USDA Branded |
|---|---|---|
| Calories | 310 kcal | 310 kcal |
| Protein | 17.2 g | 17.2 g |
| Carbohydrates | 37.9 g | 37.9 g |
| Fat | 0 g | 0 g |
| Fiber | 3.4 g | 3.4 g |
| Sugars | 3.5 g | 3.5 g |
| Sodium | 0 mg | 0 mg |
Product details
- Brand
- Frontier Soups
- Barcode
- 0766694301402
- Label serving
- 0.25 cup (29 g)
- Category
- Soups
- Nutri-Score
- A as computed by Open Food Facts
- NOVA group
- 3 processing level (1 to 4), as classified by Open Food Facts
Ingredients
Black beluga lentils, onion, carrot, scallions, spices and herbs.
As listed on the package and transcribed by Open Food Facts contributors. Always check the package for allergens.
Ingredient guides: Onion
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Per 100 g. Calories in kcal. n/a: not reported by the source.
Frequently asked questions
How many calories are in French Onion Soup?
100 g of French Onion Soup has 310 kcal. Serving, 0.25 cup, 29 g (29 g): about 90 kcal.
Is French Onion Soup high in protein?
French Onion Soup contains 17.2 g of protein per 100 g (34% of the 50 g Daily Value), or 5 g in serving, 0.25 cup, 29 g (29 g). About 31% of its calories come from protein. Compared with other soups and sauces, that is among the highest quarter (median 2.4 g).
How many carbs are in French Onion Soup?
French Onion Soup has 37.9 g of total carbohydrates per 100 g, including 3.4 g of fiber and 3.5 g of sugars.
How much fat is in French Onion Soup?
French Onion Soup contains 0 g of fat per 100 g, of which 0 g is saturated (0% of the Daily Value).
What vitamins and minerals does French Onion Soup contain?
Per 100 g, the most notable amounts relative to the Daily Value are iron (35% DV), Vitamin C (18% DV) and calcium (16% DV). The full list is in the vitamins and minerals table above.
How much sodium is in French Onion Soup?
100 g contains 0 mg of sodium, 0% of the 2,300 mg Daily Value.
Where does this nutrition data come from?
From USDA FoodData Central: Branded Foods, record dated November 29, 2025. FoodFactly last checked it on November 6, 2026. Each value above shows whether it was measured, calculated or taken from a label.
Source of the nutrition information
- USDA FoodData Central: Branded Foods, record 2026966. License: CC0 1.0 (U.S. public domain). Source record dated September 6, 2019. Imported November 6, 2026.
- Open Food Facts, record 0766694301402. License: ODbL 1.0 (Open Food Facts). Source record dated November 29, 2025. Imported November 6, 2026.
Last updated: . Data quality score: 75/100 (how it is calculated).
General nutrition information, not medical advice. Individual needs differ; see our disclaimer.