Protein content
A 1 cup chopped serving of red bell pepper contains 1.5 g of protein - only a minor source of protein, about 3% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is more of an energy food than a protein food.
| Serving | 1 cup chopped (149 g) |
|---|---|
| Protein per serving | 1.5 g |
| Protein per 100 g | 0.99 g |
| Calories per serving | 39 kcal |
| Protein density | 15% of calories |
| Share of 50 g Daily Value | 3% |
| Protein quality | Incomplete protein |
| Category | Vegetables |
| Food type | Whole food |
| USDA record | FoodData Central #170108 |
A typical 1 cup chopped serving of red bell pepper contains 1.5 grams of protein (0.99 g per 100 g), which makes it only a minor source of protein. That covers roughly 3% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 15% of the calories in red bell pepper come from protein, so it is more of an energy food than a protein food. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Among the 105 vegetables in the database, red bell pepper ranks 68th by protein per serving, and 691st out of all 796 foods on the site. Set against red cabbage, another vegetable entry in the database, a serving carries about 0.5 g more protein (red cabbage has 1 g per 1 cup shredded raw).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by volume at 149 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #170108 - "Peppers, sweet, red, raw" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Red bell pepper has 0.99 g of protein per 100 g. A typical 1 cup chopped serving (149 g) provides 1.5 g.
No. Red bell pepper is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
A 1 cup chopped serving of red bell pepper contains 1.5 g of protein, about 3% of the 50 g reference Daily Value.
Red bell pepper is only a minor source of protein, and about 15% of its calories come from protein, which makes it more of an energy food than a protein food. Set against red cabbage, another vegetable entry in the database, a serving carries about 0.5 g more protein (red cabbage has 1 g per 1 cup shredded raw).
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