Peanut Butter vs Skim Milk: Nutrition Comparison
Which is healthier? Compare calories, protein, carbs, and more
Complete side-by-side nutrition comparison per 100g serving | Updated 2026
Which is Healthier?
Skim Milk is generally healthier
Skim Milk comes out ahead in this comparison, winning in 3 out of 5 key nutritional categories. It has fewer calories (34 vs 588), less sugar (5g vs 9.4g), less sodium (42mg vs 459mg)making it the better choice for most health goals.
Quick Summary
Fewer Calories
Skim Milk
34 kcal
More Protein
Peanut Butter
25g
More Fiber
Peanut Butter
6g
Less Sugar
Skim Milk
5g
Visual Comparison
Side-by-Side Nutrition Table
| Nutrient | Peanut Butter | Skim Milk | Difference |
|---|---|---|---|
| Calories | 588kcal | 34kcal✓ | +554.0kcal |
| Protein | 25g✓ | 3.4g | +21.6g |
| Carbohydrates | 20g | 5g✓ | +15.0g |
| Fat | 50g | 0.1g✓ | +49.9g |
| Fiber | 6g✓ | 0g | +6.0g |
| Sugar | 9.4g | 5g✓ | +4.4g |
| Sodium | 459mg | 42mg✓ | +417.0mg |
Serving Size Comparison
All values above are per 100g. Here's how they compare in common serving sizes:
Peanut Butter
Skim Milk
Diet Compatibility
Peanut Butter
Skim Milk
When to Choose Peanut Butter
- ✓Higher in protein (25g vs 3.4g)
- ✓More fiber (6g vs 0g)
Common Uses
When to Choose Skim Milk
- ✓Lower in calories (34 vs 588)
- ✓Lower in carbs (5g vs 20g)
- ✓Less sugar (5g vs 9.4g)
- ✓Lower sodium (42mg vs 459mg)
Common Uses
Peanut Butter vs Skim Milk: Nutritional Analysis
Peanut Butter is more calorie-dense at 588 calories per 100g compared to 34 for Skim Milk, a difference of 554 calories. On the protein front, Peanut Butter delivers more with 25g per 100g versus 3.4g, which matters for muscle maintenance, satiety, and overall metabolic health. These differences become meaningful when you consider how each food fits into your daily dietary pattern rather than looking at any single nutrient in isolation.
Macronutrient Breakdown
The macronutrient profiles of Peanut Butter and Skim Milk tell different nutritional stories. Peanut Butter provides 20g of carbohydrates, 50g of fat, and 6g of fiber per 100g, while Skim Milk contains 5g carbs, 0.1g fat, and 0g fiber. The higher fiber content in Peanut Butter supports digestive health, helps regulate blood sugar after meals, and contributes to longer-lasting satiety. Sugar content also differs: Peanut Butter contains 9.4g while Skim Milk has 5g per 100g. Lower sugar options are generally preferable for blood sugar management and dental health.
Key Takeaways
- For weight management: Skim Milk is the lower-calorie choice at 34 cal/100g, making it more suitable for calorie-controlled diets.
- For muscle building: Peanut Butter provides more protein (25g/100g), supporting muscle repair and growth.
- For sustained energy: Peanut Butter offers more fiber (6g/100g), which slows digestion and provides steadier energy release.
- Overall: Neither food is universally "better" than the other. The right choice depends on your specific nutritional goals, meal context, and dietary preferences. Both can play a role in a balanced diet.
Frequently Asked Questions
Which has more calories, Peanut Butter or Skim Milk?
Peanut Butter has more calories with 588 kcal per 100g, compared to Skim Milk with 34 kcal. That's a difference of 554 calories per 100g serving.
Is Peanut Butter healthier than Skim Milk?
Based on our nutritional analysis, Skim Milk is generally the healthier choice, winning in 3 out of 5 key nutritional categories. Skim Milk has 34 calories, 3.4g protein, and 0g fiber per 100g. However, the best choice depends on your specific dietary goals.
What is the protein difference between Peanut Butter and Skim Milk?
Peanut Butter has more protein with 25g per 100g, compared to Skim Milk with 3.4g. Peanut Butter provides 21.6g more protein per 100g serving.
Which is better for weight loss, Peanut Butter or Skim Milk?
For weight loss, Skim Milk is the better choice with only 34 calories per 100g compared to 588 calories in Peanut Butter. Peanut Butter also offers 6g of fiber per 100g, which helps you feel fuller longer.
Does Peanut Butter or Skim Milk have fewer carbs?
Skim Milk has fewer carbs with 5g per 100g, compared to Peanut Butter with 20g. If you're following a low-carb diet, Skim Milk is the better option with 15.0g fewer carbohydrates.
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About Our Data
All nutrition data in this comparison is sourced from the USDA FoodData Central, the official food composition database maintained by the U.S. Department of Agriculture. Values are based on 100g servings for accurate comparison.
Health Disclaimer: This comparison is for informational purposes only and is not intended as medical or dietary advice. Nutritional needs vary by individual. The best food choice depends on your personal health goals, dietary requirements, and preferences. Consult a healthcare provider or registered dietitian for personalized nutrition guidance.