A typical serving of pecans (1 oz (19 halves), 28 g) has about 196 calories. Per 100 g: 691 kcal, 9.2 g protein, 13.9 g carbs, 72 g fat. The same 100 g carries 9.6 g of fiber and 4 g of sugar. Most of the energy comes from fat.
| Serving | Weight | Calories |
|---|---|---|
| 1 oz (19 halves) | 28 g | 196 kcal |
| 1 cup, halves | 99 g | 684 kcal |
| 100 g | 100 g | 691 kcal |
Second only to macadamias in fat; pie is not the pecan's fault, but it does not help. On the energy-density scale, 691 kcal per 100 g puts pecans at the very high end. Fiber is the standout at 9.6 g per 100 g, which slows a portion down more than the calorie count suggests.
A typical serving (1 oz (19 halves), 28 g) has about 196 calories, and 100 g has 691 kcal. Calories scale with weight, so double the portion means double the number.
There are 9.2 g of protein in 100 g of pecans, which works out to about 2.6 g per serving (1 oz). Treat it as an energy source rather than a protein source.
Yes, in the plain arithmetic sense: 72 g of fat per 100 g supplies about 94% of the calories. Whether that fits your day depends on your totals, not on the food alone.
Every value on this page comes from USDA FoodData Central, entry 170182 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 170182 (SR Legacy). Serving calories are computed from the per-100-g values.
