How much protein is in cashews?

Cashews are the soft, buttery nut that disappears by the handful — which is exactly why their protein gets overestimated. A real-world serving is 1 oz (28 g, about 18 nuts), and that delivers ~5.1 g of protein for ~155 calories. The 18.2 g of protein per 100 g on the data sheet sounds substantial, but 100 g of cashews is about 3.5 ounces and 553 calories — nobody eats that as a snack. Per ounce, cashews land a little lower in calories than walnuts or almonds, but they’re still a fat-and-snack food first, with protein riding along in modest amounts.

What makes cashews different from the other nuts on the shelf is their make-up. They’re the more carb-forward nut — about 30.2 g of carbs per 100 g, noticeably higher than almonds or walnuts — and slightly lower in fat at 43.9 g per 100 g, which is part of why an ounce comes in around 155 calories. That softer, creamier profile is the trade-off you taste, and it comes with one nutritional catch: cashews are lower in fiber than almonds, only about 0.9 g per ounce.

Why cashews aren’t a protein source

The numbers just don’t favor it. To reach a meaningful 20+ g of protein from cashews alone, you’d be eating roughly four servings and over 600 calories — when a chicken breast or a scoop of whey delivers the same protein for far less. Protein quality compounds the issue: like most nuts, cashew protein is incomplete, low in the amino acid lysine. That’s harmless in a varied diet, but it confirms the role — cashews are a supporting snack, not a protein workhorse.

Where cashews genuinely earn their place

Cashews do bring real nutrition, just not protein. They’re notably rich in copper and magnesium — two minerals many diets fall short on — and the bulk of their fat is heart-healthy monounsaturated fat, the same kind that anchors olive oil. They also carry meaningful iron. The discipline they demand is portion control: because they’re so easy to pour and so calorie-dense, the gap between a measured ounce and mindless grazing is the difference between a 155-calorie snack and a 350-calorie one. Use cashews the way they’re built to be used — a creamy add-on to a stir-fry, a topping for a grain bowl, or a measured handful between meals — and lean on real proteins for the heavy lifting. For a portioned, grab-and-go option, the graded packaged nuts below are a good starting point.