A one-ounce serving of pecans (about 19 to 20 halves) contains 2.6 grams of protein. That puts pecans on the lower end of the protein spectrum among tree nuts, though they make up for it with an impressive amount of healthy fats and fiber.
Protein per Serving Size
The standard recommended serving of pecans is 18 to 20 halves, which weighs roughly one ounce (28 grams). That single serving delivers 2.6 grams of protein. Scale up to a full cup of chopped pecans and you get about 10 grams of protein, though that also comes with nearly 800 calories, so most people stick closer to the one-ounce portion.
For context, the average adult needs somewhere between 46 and 56 grams of protein per day. A single serving of pecans covers about 5% of that target. Pecans contribute meaningful protein when combined with other foods throughout the day, but they aren’t a protein powerhouse on their own.
How Pecans Compare to Other Nuts
If you’re choosing nuts primarily for protein, pecans rank near the bottom. Almonds deliver 6 grams of protein per ounce, more than double what pecans offer in the same serving size. Peanuts (technically a legume) pack about 7 grams per ounce, and pistachios come in around 6 grams. Walnuts and cashews land in the 4 to 5 gram range, still noticeably higher than pecans.
That said, protein content alone doesn’t determine a nut’s nutritional value. Pecans have a different strength.
What Pecans Are Really Rich In
Pecans are first and foremost a fat-rich food. A one-cup chopped serving contains about 78 grams of total fat, and the breakdown is favorable. Nearly 45 grams come from monounsaturated fat (the same type found in olive oil), with another 24 grams of polyunsaturated fat. Only about 7 grams are saturated. That ratio is linked to better cholesterol levels and heart health.
Fiber is the other standout. That same cup of chopped pecans provides over 10 grams of dietary fiber, which is roughly a third of what most adults need in a day. Even a one-ounce handful gives you about 2.7 grams of fiber, nearly as much as the protein it provides. The combination of fat and fiber makes pecans surprisingly filling for their size, slowing digestion and keeping blood sugar steadier than a low-fat snack would.
Easy Ways to Add More Protein Alongside Pecans
Since pecans are modest in protein but excellent in other nutrients, pairing them with higher-protein foods gives you the best of both. Tossing pecans into Greek yogurt adds crunch and healthy fats while the yogurt supplies 12 to 15 grams of protein per serving. Mixing pecans into oatmeal made with milk, adding them to a salad with grilled chicken, or blending them into a smoothie with protein powder are all simple ways to round out a meal.
Pecan butter spread on whole-grain toast with a side of eggs is another practical combination. You get the monounsaturated fats and fiber from the pecans alongside a complete protein source. The goal isn’t to force pecans into a role they don’t play well. It’s to let them do what they do best (deliver healthy fats, fiber, and minerals like manganese, copper, and zinc) while other ingredients handle the protein.
Does Roasting Change the Protein?
Roasting pecans at typical temperatures has minimal effect on their protein content. The heat can reduce certain heat-sensitive vitamins, but protein and fat values remain essentially the same whether your pecans are raw, dry-roasted, or oil-roasted. The bigger nutritional difference comes from what’s added during processing. Honey-glazed, candied, or heavily salted pecans carry extra sugar and sodium that plain roasted or raw pecans don’t. If you’re tracking macros, plain versions keep things simple.