Food database · Legumes & beans
Protein content
A 2 tbsp serving of reduced-fat peanut butter contains 9.3 g of protein - a good source of protein, about 19% of the 50 g Daily Value.
Share of this food's calories that come from protein - it is moderately protein-dense.
| Serving | 2 tbsp (36 g) |
|---|---|
| Protein per serving | 9.3 g |
| Protein per 100 g | 25.9 g |
| Calories per serving | 187 kcal |
| Protein density | 20% of calories |
| Share of 50 g Daily Value | 19% |
| Protein quality | Incomplete protein |
| Category | Legumes & beans |
| Food type | Prepared / processed |
| USDA record | FoodData Central #172458 |
A typical 2 tbsp serving of reduced-fat peanut butter contains 9.3 grams of protein (25.9 g per 100 g), which makes it a good source of protein. That covers roughly 19% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 20% of the calories in reduced-fat peanut butter come from protein, so it is moderately protein-dense. 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 54 legumes in the database, reduced-fat peanut butter ranks 40th by protein per serving, and 319th out of all 796 foods on the site. Set against green peas, another legume entry in the database, a serving carries about 0.7 g more protein (green peas has 8.6 g per 1 cup cooked).
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 36 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Fat removed from reduced-fat peanut butter is usually replaced with added sugar and starch.
Source: USDA FoodData Central #172458 - "Peanut butter, smooth, reduced fat" (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
Reduced-fat peanut butter has 25.9 g of protein per 100 g. A typical 2 tbsp serving (36 g) provides 9.3 g.
No. Reduced-fat peanut butter 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 2 tbsp serving of reduced-fat peanut butter contains 9.3 g of protein, about 19% of the 50 g reference Daily Value.
Reduced-fat peanut butter is a good source of protein, and about 20% of its calories come from protein, which makes it moderately protein-dense. Set against green peas, another legume entry in the database, a serving carries about 0.7 g more protein (green peas has 8.6 g per 1 cup cooked).
Related