Flank steak vs Prime rib: Which Has More Calories?
Per 100 g, Flank steak has 192 kcal and Prime rib has 355 kcal, so Flank steak has 46% fewer calories.
Flank steak has more protein (27.7 g vs 16.2 g). Prime rib has more fat (31.7 g vs 8.23 g). Relative to calories, Flank steak is the better protein source (14.4 g vs 4.55 g of protein per 100 kcal).


Nutrition Facts
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Amount Per Serving:
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Amount Per Serving:
Flank Steak vs Prime Rib 100g Compare
| per 100g | Flank steak | Prime rib |
|---|---|---|
| Calories | 192 | 355 |
| Fat | 8.23 g | 31.66 g |
| Protein | 27.66 g | 16.15 g |
| Water | 64.17 g | 51.51 g |
| Calcium | 20 mg | 9 mg |
| Iron | 1.74 mg | 1.7 mg |
| Magnessium | 23 mg | 16 mg |
| Potassium | 339 mg | 263 mg |
| Sodium | 56 mg | 53 mg |
| Vitaminium B1 (Thiamine) | 0.075 mg | 0.08 mg |
| Vitaminium B2 (riboflavin) | 0.133 mg | 0.13 mg |
| Vitaminium B3 (Niacin) | 7.363 mg | 2.75 mg |
| Vitaminium B6 | 0.579 mg | 0.31 mg |
| Vitaminium B9 (Folic acid) | 0.009 µg | 0.005 µg |
Less Calories in Flank steak
At first glance, you can see that in flank steak is much less calories than in Prime rib.
Flank steak has 192 kcal per 100g and Prime rib 355 kcal per 100g so it is pretty easy to calculate that the difference is about 85%.
Additionally, it is also easy to notice that most of the calories in flank steak comes from protein and in Prime rib from fat.
See tables below to compare flank steak with Prime rib in details.
Flank steak 100g
192kcalCalories source
- 0% CARBS.
- 60% PROTEIN
- 40% FAT
Prime rib 100g
355kcalCalories source
- 0% CARBS
- 18% PROTEIN
- 82% FAT
Compares of flank steak
Compares of Prime rib
About the data
Nutrition values on this page are given per 100 g of the food and are based on the official United States Department of Agriculture FoodData Central database. The exact record used for each food is linked under the tables.
Marcin Piotrowicz – calories-info.com creator · Healthy diet and healthy lifestyle promoter. The information is for general purposes and is not medical or dietary advice.