Peanut Butter vs Flaxseed: 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?
Flaxseed is generally healthier
Flaxseed comes out ahead in this comparison, winning in 4 out of 5 key nutritional categories. It has fewer calories (534 vs 588), more fiber (27g vs 6g), less sugar (1.6g vs 9.4g), less sodium (30mg vs 459mg)making it the better choice for most health goals.
Quick Summary
Fewer Calories
Flaxseed
534 kcal
More Protein
Peanut Butter
25g
More Fiber
Flaxseed
27g
Less Sugar
Flaxseed
1.6g
Visual Comparison
Side-by-Side Nutrition Table
| Nutrient | Peanut Butter | Flaxseed | Difference |
|---|---|---|---|
| Calories | 588kcal | 534kcal✓ | +54.0kcal |
| Protein | 25g✓ | 18g | +7.0g |
| Carbohydrates | 20g✓ | 29g | -9.0g |
| Fat | 50g | 42g✓ | +8.0g |
| Fiber | 6g | 27g✓ | -21.0g |
| Sugar | 9.4g | 1.6g✓ | +7.8g |
| Sodium | 459mg | 30mg✓ | +429.0mg |
Serving Size Comparison
All values above are per 100g. Here's how they compare in common serving sizes:
Peanut Butter
Flaxseed
Diet Compatibility
Peanut Butter
Flaxseed
When to Choose Peanut Butter
- ✓Higher in protein (25g vs 18g)
- ✓Lower in carbs (20g vs 29g)
Common Uses
When to Choose Flaxseed
- ✓Lower in calories (534 vs 588)
- ✓More fiber (27g vs 6g)
- ✓Less sugar (1.6g vs 9.4g)
- ✓Lower sodium (30mg vs 459mg)
Common Uses
Peanut Butter vs Flaxseed: Nutritional Analysis
Peanut Butter is more calorie-dense at 588 calories per 100g compared to 534 for Flaxseed, a difference of 54 calories. On the protein front, Peanut Butter delivers more with 25g per 100g versus 18g, 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 Flaxseed tell different nutritional stories. Peanut Butter provides 20g of carbohydrates, 50g of fat, and 6g of fiber per 100g, while Flaxseed contains 29g carbs, 42g fat, and 27g fiber. The higher fiber content in Flaxseed 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 Flaxseed has 1.6g per 100g. Lower sugar options are generally preferable for blood sugar management and dental health.
Key Takeaways
- For weight management: Flaxseed is the lower-calorie choice at 534 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: Flaxseed offers more fiber (27g/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 Flaxseed?
Peanut Butter has more calories with 588 kcal per 100g, compared to Flaxseed with 534 kcal. That's a difference of 54 calories per 100g serving.
Is Peanut Butter healthier than Flaxseed?
Based on our nutritional analysis, Flaxseed is generally the healthier choice, winning in 4 out of 5 key nutritional categories. Flaxseed has 534 calories, 18g protein, and 27g fiber per 100g. However, the best choice depends on your specific dietary goals.
What is the protein difference between Peanut Butter and Flaxseed?
Peanut Butter has more protein with 25g per 100g, compared to Flaxseed with 18g. Peanut Butter provides 7.0g more protein per 100g serving.
Which is better for weight loss, Peanut Butter or Flaxseed?
For weight loss, Flaxseed is the better choice with only 534 calories per 100g compared to 588 calories in Peanut Butter. Flaxseed also offers 27g of fiber per 100g, which helps you feel fuller longer.
Does Peanut Butter or Flaxseed have fewer carbs?
Peanut Butter has fewer carbs with 20g per 100g, compared to Flaxseed with 29g. If you're following a low-carb diet, Peanut Butter is the better option with 9.0g 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.