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 VicturaQuick 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
Serving calculator
How much did you eat or drink — Peanut 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
Vitamins
- Niacin: 13.1mg
Minerals
- Magnesium: 154mg
Scientific explanation
Research-backedPeanut 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 insightAmong 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
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
References
Ready to track your meals with AI?
Victura scans your plate, logs macros automatically, and coaches you toward your goals — halal, keto, diabetic-friendly, and more.