Peanut Butter Nutrition Facts

Complete peanut butter nutrition breakdown with 588 kcal per 100g, glycemic index, and diet compatibility.

Written by Victura Nutrition TeamReviewed by Victura Editorial ReviewLast updated Jul 19, 2026

588

Calories

25.1g

Protein

20.0g

Carbs

Use caution

Is it healthy?

per 100g · per panel values

Track this food in Victura

Quick answer

A 100g serving of peanut butter provides about 588 kcal. Per 100g you get about 20g carbs and 25.09g protein. Glycemic index is around 14.

Peanut Butter is a whole food with approximately 588 calories per 100g, tracked in Victura for macro-aware meal logging.

Calories (100g serving)
588 kcal
Carbs (100g)
20.0g
Protein (100g)
25.09g
Serving reference
100g · 100g serving
Glycemic index
14
Peanut Butter food photo
Peanut Butter — real food photo
Peanut Butter portion size visual
Portion size
Peanut Butter calories and macros infographic
Calories & macros

Serving calculator

How much did you eat or drinkPeanut Butter?

588

Calories

25.1g

Protein

20.0g

Carbs

50.4g

Fat

Nutrition facts

per 100g · Source: USDA FoodData Central (seeded Phase 0)

588 kcal

Calories

Protein25.1g
Carbohydrates20.0g
Fat50.4g
Fiber6.0g
Sugar9.2g
Glycemic index14low

Vitamins

  • Niacin: 13.1mg

Minerals

  • Magnesium: 154mg

Scientific explanation

Research-backed

Peanut Butter provides approximately 588 kcal per 100g with 25.1g protein, 20.0g carbohydrates, and 50.4g fat. Dietary fiber is 6.0g per 100g. The glycemic index is estimated at 14 (low), meaning glucose rises at a slow rate after consumption. Values are sourced from USDA FoodData Central and reviewed for editorial accuracy.

Community insights

Community insight

Among Victura meal logs, peanut butter appears frequently as a portable snack and smoothie ingredient. Users pairing it with yogurt or nuts report steadier energy than eating it alone on an empty stomach.

Pros

  • Peanut Butter is a whole food with measurable macro nutrients

Cons

  • Portion size still matters for calorie goals

Best time to eat

Pair with protein and fiber for balanced meals.

Good windows

  • With main meals

Consider avoiding

  • Very large portions without activity

Diet compatibility

Weight loss

Use caution

At 588 kcal and 6.0g fiber per 100g, this food is energy-dense - watch portions.

Keto

Use caution

Net carbs ~14.0g per 100g - too high-carb for standard keto.

Diabetic friendly

Friendly

GI 14 with 9.2g sugar - generally blood-sugar friendly in moderation.

Frequently asked questions

Yes — a peanut butter is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals. Estimated GI is 14.

People also ask

  • Is a peanut butter healthy?

    Yes — a peanut butter is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals. Estimated GI is 14.

  • Can I eat a peanut butter every day?

    Most people can include a peanut butter daily as part of a balanced diet, as long as total calories and carbs fit their plan.

  • Are Peanut Butters good for weight loss?

    At 588 kcal and 6.0g fiber per 100g, this food is energy-dense - watch portions.

  • How many calories are in a peanut butter?

    A typical medium serving of peanut butter has about 588 calories, while 100g contains about 588 calories (USDA reference).

  • Are Peanut Butters good before a workout?

    Peanut butters can work before activity when you want easy carbs; pair a peanut butter with protein if your session is long.

  • Are Peanut Butters high in sugar?

    Peanut butters contain about 9.2g sugar per 100g — mostly natural sugars when whole.

  • Is peanut butter good for weight loss?

    At 588 kcal and 6.0g fiber per 100g, this food is energy-dense - watch portions.

  • Is peanut butter keto-friendly?

    Net carbs ~14.0g per 100g - too high-carb for standard keto.

  • What is the glycemic index of peanut butter?

    Estimated GI is 14. Pair with protein or fat to blunt glucose response.

  • Is peanut butter safe for people with diabetes?

    GI 14 with 9.2g sugar - generally blood-sugar friendly in moderation.

  • How many calories does peanut butter have?

    Peanut butter contains 588 calories per 100g. A standard 2-tablespoon serving (approximately 32g) provides about 188 calories, making it a highly energy-dense food where portion awareness is key.

How we review this guide

Written by
Victura Nutrition Team
Reviewed by
Victura Editorial Review
Reference sources
4
Last updated
Jul 19, 2026

Revision & correction policy

References

  1. USDA FoodData Central(usda)
  2. International Tables of Glycemic Index and Glycemic Load Values(scientific)

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