French onion soup calories
French onion soup is a cooked dish, so its calories depend on who made it. Our reference recipe lands at 83 kcal per 100 g, and a 330 g plate comes to about 274 kcal.
A serving covers about 14% of the 2,000 kcal reference day used on US nutrition labels.
A real serving: 162 to 386 kcal
Nutrition facts
| Nutrient | Per 100 g | Per serving (330 g) |
|---|---|---|
| kcal | 83 | 274 |
| Protein, g | 3.8 | 12.5 |
| Fat, g | 4.6 | 15.2 |
| Carbs, g | 6.9 | 22.8 |
| Fiber, g | 0.5 | 1.6 |
Calories by portion
| Portions | Most likely | Range, kcal | Steps to burn |
|---|---|---|---|
| ½ · 165 g | 137 kcal | 81-193 | 4,300 |
| 1 · 330 g | 274 kcal | 162-386 | 8,500 |
| 1½ · 495 g | 411 kcal | 242-579 | 12,800 |
| 2 · 660 g | 548 kcal | 323-772 | 17,100 |
The same portion buttons as in the Kalorea app: ½, 1, 1½ and 2 servings.
How long to burn one serving
About 8,500 steps, or 66 minutes of brisk walking for an average adult.
How we count: an adult of 75 kg and 175 cm walking at 5.6 km/h burns (4.3 − 1) × 75 = 247.5 kcal an hour above resting. Steps are distance divided by a stride of 0.415 × height. That's about 31 steps per kcal. The Kalorea app uses your own height and weight.
Soup is mostly water, so the bowl size and what's floating on top (sour cream, oil, meat) decide the number.
Compared with similar foods
| Food | kcal / 100 g | Serving | Protein / 100 g |
|---|---|---|---|
| Tom yum | 60 | 240 kcal / 400 g | 5.1 g |
| Lentil soup | 64 | 192 kcal / 300 g | 3.3 g |
| Cream of mushroom soup | 65 | 195 kcal / 300 g | 2.4 g |
| Clam chowder | 70 | 210 kcal / 300 g | 2.9 g |
| Okroshka | 72 | 252 kcal / 350 g | 4.1 g |
| Split pea soup | 75 | 225 kcal / 300 g | 4.1 g |
| Kharcho | 78 | 234 kcal / 300 g | 4.8 g |
| Solyanka | 83 | 249 kcal / 300 g | 5.5 g |
| French onion soup | 83 | 274 kcal / 330 g | 3.8 g |
Lightest in this group per 100 g: Tom yum.
Where the numbers come from
This is a home-style dish, so there's no single lab value. We built it from USDA ingredients using this recipe, then divided by its total weight:
The ±41% range reflects how much real recipes and portions differ: more oil, fattier meat or a bigger scoop all move it.
Questions
How many calories in french onion soup?
French onion soup has about 83 kcal per 100 g. A typical 330 g serving is about 274 kcal, and realistically anywhere from 162 to 386 kcal depending on the recipe and portion.
How much protein is in French onion soup?
3.8 g of protein per 100 g, or about 12.5 g in a 330 g serving.
Your plate isn't a lab sample
Snap your own French onion soup and Kalorea estimates what's actually on your plate, with a range and macros.