Peanut Butter Nutrition Facts
Peanut Butter Nutrition Facts

26 Perfect Peanut Butter Nutrition Facts

Madeline Thatcher
By Madeline Thatcher, Associate Writer
Published October 2, 2019Updated December 27, 2025

Peanut butter isn't just tasty; it is packed with protein, healthy fats, nutrients, and surprising health benefits. From boosting muscle growth to lowering diabetes risk, here are amazing peanut butter facts you need to know.


  • Serving Size & Calories

    Recommended serving

    Two tablespoons (28.6 grams).[5]
  • Calories per 100g

    558 calories; so while peanut butter's health benefits are many, moderation is key to maintaining a healthy weight.[2]
  • Low-fat vs. full-fat

    Low fat peanut butter has almost the same calories as full-fat because manufacturers add other ingredients.[7]
  • Protein & Muscle Benefits

    High in protein

    7g per serving (15% daily for women, 12% for men).[5]
  • Muscle gain

    Its protein and calories can fuel tough workouts.[5]
  • Amino acid note

    Although peanuts are high in protein, they do not contain significant amounts of the amino acid methionine. To create a truly ultimate peanut butter snack, try spreading it on a piece of wholegrain bread.[2][5]
  • Fun Peanut Facts

    Peanut butter uses

    Most peanuts grown in the United States are used to make peanut butter.[8]
  • Who invented peanut butter?

    In 1895, Dr. John Harvey Kellogg  developed an early version of peanut butter as a protein supplement for people who could not eat solid food.[9]
  • Peanut Butter Legumes
    Peanuts are more closely related to beans than walnuts or almonds.
  • Peanuts are legumes

    Peanuts are not actually nuts; they're legumes. Other legumes include peas, beans, and lentils.[2]
  • Peanut yields

    One acre of peanuts can make 30,000 peanut butter sandwiches.[8]
  • U.S. children

    The average child in the U.S will eat about 1,500 peanut butter sandwiches by the time they graduate from high school.[8]
  • November is National Peanut Butter Lovers' Month

    A full month dedicated to peanut butter fans.[8]
  • Health Benefits

    Nutrient-Dense

    Peanut butter contains a variety of nutrients and vitamins that give your body energy and keep it healthy, including magnesium, phosphorous, zinc, niacin, and vitamin B-6.[5]
  • Roasted peanuts are a notable source of antioxidants

    They contain about the same level of antioxidants as strawberries and blackberries.[4]
  • Heart-friendly

    Peanut butter and olive oil have a similar unsaturated to saturated fat ratio; this particular balance helps keep your heart healthy.[5]
  • Peanut butter & Type 2 diabetes

    One observational study found that women who ate peanut butter five times a week had a lower risk of developing type 2 diabetes.[2]
  • Man cannot live by bread alone; he must have peanut butter.

    - James A. Garfield

  • Weight support

    Eating peanuts or peanut butter may help you lose weight; nuts keep you feeling full longer, leading to less snacking and greater weight loss.[5]
  • Belly fat reduction

    Peanut butter can help maintain a healthy blood sugar level since it is low in carbohydrates and can be made without added sugar.[5]
  • Allergy & Baby Benefits

    Allergy prevention

    Introducing babies to peanut butter very early—around the six-month mark—drastically reduces their risk of acquiring a peanut allergy.[1]
  • Powdered vs. traditional

    Powdered peanut butter may seem like a tempting, lower-calorie option. However, while the ground stuff may be lower in fat, it also has less healthy fat too, meaning it's better to stick with traditional peanut butter for full nutrition benefits.[3]
  • Peanut Butter All Natural
    All-natural peanut butter will have the most peanut-y flavor since it won't be masked by added sugar or oil.
  • Flavor & Quality

    All-natural is best

    Pure peanut butter that contains no added salt, sugar, or oil will often separate in the jar, a good sign when shopping at the grocery store that the brand is all-natural.[5]
  • Taste secrets

    Roasted peanuts have a unique flavor that cannot be found in other foods, although potato chips, cocoa, and coffee have all been found by researchers to be similar.[4]
  • Brand choice matters

    Most peanut butter manufacturers use "runner" peanuts, one of the four types of peanuts grown in the United States. While these are the most bland of the four strains, their flavor can be tweaked with oil, salt, and sugar, ensuring a consistent taste across the brand.[4]
  • Lower sodium and sugar help highlight taste

    Peanut butter brands with lower sodium and sugar also have better flavor, as the taste of the roasted peanuts isn't masked by additional ingredients.[7]
  • The indulgent feel of peanut butter

    Because high-fat foods feel indulgent, moderate amounts of peanut butter help people stick to their eating plans.[7]
  • Storage Tips

    In order to preserve freshness, all-natural peanut butters should be stored in the refrigerator.[6]
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