A typical serving of pistachios (1 oz (49 kernels), 28 g) has about 159 calories. Per 100 g: 560 kcal, 20.2 g protein, 27.2 g carbs, 45.3 g fat. The same 100 g carries 10.6 g of fiber and 7.7 g of sugar. Most of the energy comes from fat.
| Serving | Weight | Calories |
|---|---|---|
| 1 oz (49 kernels) | 28 g | 159 kcal |
| 1/2 cup | 62 g | 344 kcal |
| 100 g | 100 g | 560 kcal |
The shells slow you down, which is genuinely useful: 49 nuts make one 159-calorie ounce. On the energy-density scale, 560 kcal per 100 g puts pistachios at the very high end. Fiber is the standout at 10.6 g per 100 g, which slows a portion down more than the calorie count suggests.
A typical serving (1 oz (49 kernels), 28 g) has about 159 calories, and 100 g has 560 kcal. Calories scale with weight, so double the portion means double the number.
There are 20.2 g of protein in 100 g of pistachios, which works out to about 5.7 g per serving (1 oz). Treat it as an energy source rather than a protein source.
Yes, in the plain arithmetic sense: 45.3 g of fat per 100 g supplies about 73% 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 170184 (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 170184 (SR Legacy). Serving calories are computed from the per-100-g values.
