How much protein is in peanuts?

Peanuts has 25.8 g of protein per 100 g and 7.3 g per 1 oz (28 g). That is 4.6 g of protein per 100 kcal — a modest protein contribution.

Where do these calorie figures come from?

USDA FoodData Central record 172430, “Peanuts, all types, raw” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

All foods

Nuts and peanut butterUSDA SR LegacyFDC 172430

Calories in peanuts

USDA FoodData Central record for “Peanuts, all types, raw” — per 100 g, per every USDA serving size, and next to the other nuts and peanut butter rows.

The short answer

Peanuts: 567 kcal per 100 g. 1 oz (28 g) is 161 kcal with 7.3 g of protein. Source: USDA FoodData Central record 172430, "Peanuts, all types, raw".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	567 kcal	100%
Protein	25.8 g	17%
Fat	49.2 g	73%
Carbohydrate	16.1 g	11%

Peanuts is 567 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 17% comes from protein, 73% from fat and 11% from carbohydrate. That works out to 4.6 g of protein per 100 kcal — a modest protein contribution.

Per serving

The serving sizes USDA lists for this record, priced from the per-100 g figures above. Nothing here is rounded to a “portion” — the gram weight next to each label is what the calories are computed from.

Serving	Weight	Calories	Protein	Fat	Carbs
100 g	100 g	567	25.8 g	49.2 g	16.1 g
1 oz	28 g	161	7.3 g	14 g	4.6 g
1 cup	146 g	828	37.7 g	71.8 g	23.5 g

Compared with other nuts and peanut butter

Food	kcal / 100 g	Protein / 100 g	Per serving
Almonds	579	21.2 g	164 kcal · 1 oz (23 whole kernels)
Walnuts	654	15.2 g	186 kcal · 1 oz (14 halves)
Cashews	553	18.2 g	157 kcal · 1 oz
Pistachios	560	20.2 g	159 kcal · 1 oz (49 kernels)
Peanuts	567	25.8 g	161 kcal · 1 oz
Peanut butter	598	22.2 g	191 kcal · 2 tbsp
Unsalted peanut butter	598	22.2 g	191 kcal · 2 tbsp

Other tables in legumes and legume products

The same numbers for the foods this one usually shares a plate — or a shopping list — with.

Calories in cooked black beans132 kcal / 100 g

Questions about peanuts

How many calories are in peanuts?: Peanuts: 567 kcal per 100 g. 1 oz (28 g) is 161 kcal with 7.3 g of protein. Source: USDA FoodData Central record 172430, "Peanuts, all types, raw".
How much protein is in peanuts?: Peanuts has 25.8 g of protein per 100 g and 7.3 g per 1 oz (28 g). That is 4.6 g of protein per 100 kcal — a modest protein contribution.
Where do these calorie figures come from?: USDA FoodData Central record 172430, “Peanuts, all types, raw” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

How calorie.one logs it

Type “peanuts” into calorie.one and the app matches this exact record — “Peanuts, all types, raw” — estimates the grams, and shows the line with its USDA label. You correct the amount; the per-100 g figure is never guessed. That split between recognition and arithmetic is the whole methodology. For the numbers in context, read Calories in olive oil, butter and cooking fats.