Walnuts vs Pecans
Two rich, raw nuts high in fat and calories. Walnuts carry more protein and the omega-3 fats; pecans are even fattier and milder with more fibre. Walnuts for the omega-3s and protein, pecans for a sweeter, buttery nut.
Walnuts and Pecans, per 100 g and per portion. A gap means USDA has no value for it — not zero.
| Walnuts · per 100 g | Pecans · per 100 g | |
|---|---|---|
| Calories | 654 | 691 |
| Protein | 15.2 g | 9.2 g |
| Fat | 65.2 g | 72 g |
| Carbs | 13.7 g | 13.9 g |
| Fiber | 6.7 g | 9.6 g |
| Sugars | 2.6 g | 4 g |
| Sodium | 2 mg | 0 mg |
| Vitamins & minerals — where both carry data | ||
| Calcium | 98 mg | 70 mg |
| Folate | 98 µg | 22 µg |
| Iron | 2.9 mg | 2.5 mg |
| Magnesium | 158 mg | 121 mg |
| Niacin | 1.1 mg | 1.2 mg |
| Phosphorus | 346 mg | 277 mg |
| Potassium | 441 mg | 410 mg |
| Riboflavin | 0.2 mg | 0.1 mg |
| Thiamin | 0.3 mg | 0.7 mg |
| Vitamin A | 1 µg | 3 µg |
| Vitamin B12 | 0 µg | 0 µg |
| Vitamin B6 | 0.5 mg | 0.2 mg |
| Vitamin C | 1.3 mg | 1.1 mg |
| Vitamin D | 0 µg | 0 µg |
| Vitamin E | 0.7 mg | 1.4 mg |
| Vitamin K | 2.7 µg | 3.5 µg |
| Zinc | 3.1 mg | 4.5 mg |
Generic USDA foods (not brands), so both carry micronutrients. Numbers are per 100 g unless the portion toggle is on. USDA FoodData Central, as of 2026-08-12.
Is Walnuts or Pecans better?
Neither is “better” on its own — it depends what you want from it. The table shows where each is higher; the short answer says when each one fits. Compare on the same basis (per 100 g) and pick for your dish and your goal.
How were these numbers worked out?
Straight from USDA FoodData Central for the generic form of each food, per 100 g. We show the portion view too, but portion sizes differ between foods, so per 100 g is the fair comparison.
Why does one column say “no data”?
Because USDA has no value for that nutrient in that food — so we leave it blank rather than print a 0 that would read as “none”. A real zero from USDA still shows as 0.