Pistachios are one of the most popular tree nuts for snacking, but their fat content often surprises people who are counting macros or calories. This pistachio fat per 100g calculator converts any portion — grams, ounces, cups, or handfuls — into a clear fat breakdown, including total fat, saturated fat, monounsaturated and polyunsaturated fats, and the calories those fats provide.
Whether you’re meal prepping, following a keto or Mediterranean diet, tracking macros in an app, or just curious about your favorite snack, this tool gives you fast, consistent nutrition figures based on standard USDA reference data. Use the quick-fill buttons to estimate common serving sizes, or enter your own portion to see the exact fat content and Daily Value percentage. All results are normalized to per-100g values, so you can compare pistachios with other foods on an equal basis.
🥜 Pistachio Fat Calculator
Calculate total fat, fat calories, and fat breakdown for any pistachio portion.
How the Calculation Works
This calculator starts with standard nutrition data for shelled raw pistachios: approximately 45.32 g of total fat per 100 g of kernels. That figure comes from USDA FoodData Central, the reference food database used by nutrition labels in the United States. To find the fat in your portion, the tool first converts your chosen unit into grams:
- Ounces → grams: multiply by 28.3495
- Cups (shelled) → grams: multiply by 123
- Handfuls → grams: multiply by 30 (one typical handful)
Once the weight is in grams, total fat is calculated as:
Fat calories are then estimated using the standard Atwater factor of 9 kcal per gram of fat. The Daily Value percentage uses the FDA's reference intake of 78 g of total fat for a 2,000-calorie diet, so the result answers the question: “What percent of my daily fat allowance does this serving cover?”
Reference Nutrition Table
The table below summarizes typical values for pistachios in their most common serving sizes. Use it as a quick reference or to double-check the calculator output.
| Serving | Weight (g) | Total Fat (g) | Saturated Fat (g) | Fat Calories (kcal) |
|---|---|---|---|---|
| 1 pistachio kernel | 0.6 | 0.27 | 0.03 | 2.4 |
| 1 oz (49 kernels) | 28 | 12.7 | 1.6 | 114 |
| Handful (~30 g) | 30 | 13.6 | 1.7 | 122 |
| 1 cup shelled | 123 | 55.7 | 6.8 | 502 |
| 100 g | 100 | 45.3 | 5.6 | 408 |
Values rounded to one decimal place. Actual numbers vary slightly with variety, growing conditions, and whether pistachios are raw, dry-roasted, or oil-roasted.
Worked Examples
Example 1: A 40 g snack.
Weight = 40 g. Total fat = 40 × 45.32 ÷ 100 = 18.13 g. Fat calories = 18.13 × 9 = 163 kcal. % Daily Value = 18.13 ÷ 78 × 100 = 23%. Saturated fat = 40 × 5.56 ÷ 100 = 2.22 g.
Example 2: Two ounces of pistachios.
Convert 2 oz to grams: 2 × 28.3495 = 56.7 g. Total fat = 56.7 × 45.32 ÷ 100 = 25.7 g. Fat calories = 25.7 × 9 = 231 kcal. That’s about 33% of the daily fat reference value and roughly 45% of the total calories in that serving, since pistachios are an energy-dense food.
Example 3: One cup of shelled pistachios.
The calculator converts 1 cup = 123 g. Total fat = 123 × 45.32 ÷ 100 = 55.7 g. Of this, about 6.8 g is saturated fat, 28.7 g is monounsaturated fat, and 17.7 g is polyunsaturated fat — a favorable fatty-acid profile for heart health when eaten in moderation.
Tips for Tracking Pistachio Fat Accurately
Weigh shelled kernels, not shell-in. The shell makes up roughly 45% of the total weight. If you weigh a cup of pistachios in the shell, more than half is waste. For accurate fat tracking, weigh only the edible kernels.
Adjust for roasted varieties. Dry-roasted pistachios have nearly identical fat and calorie values to raw nuts, but oil-roasted or honey-roasted versions can be meaningfully higher in fat or sugar. Check the label and use the calculator as a baseline.
Consider portion creep. A single serving is about 49 kernels, or roughly 1 oz. It’s easy to eat double that in one sitting, so tracking by weight rather than by “handful” gives the most consistent macro numbers.
If you’re also tracking other nuts, you can compare the fat density of pistachios with almonds using the almond calorie calculator to see how your favorite snack fits your daily fat budget.
Frequently Asked Questions
Are pistachios high in fat? Yes — around 45 g per 100 g of shelled kernels — but the fat is mostly unsaturated. About 52% is monounsaturated fat (the same type prominent in olive oil) and about 32% is polyunsaturated fat, including omega-6 fatty acids. Less than 13% of the total fat is saturated.
How many calories come from fat in pistachios? In a 100 g portion, fat supplies roughly 408 of the approximately 560 kcal, meaning about 73% of pistachio calories come from fat. This is typical for nuts and is one reason portion control matters even though the fats are mostly the “healthy” type.
Should I avoid pistachios if I’m on a low-fat diet? Not necessarily. The fats in pistachios are primarily unsaturated and come packaged with fiber, protein, vitamin B6, thiamine, phosphorus, and antioxidants. Many dietary patterns, including Mediterranean and plant-forward eating, include moderate portions of nuts. What matters is fitting them into your calorie and fat targets for the day.
Does the calculator work for pistachios in the shell? No — the figures are for shelled kernels. If you weigh pistachios in the shell, estimate that the edible portion is roughly 55% of the total weight, or simply shell them first and re-weigh.
Real-World Applications
Pistachio fat tracking is useful in several everyday situations: planning a balanced snack for work or travel, calculating macros for a homemade granola or trail mix, adjusting a recipe that calls for ground pistachios, or comparing portion sizes on restaurant nutrition menus. Because this calculator normalizes every result to per-100g values, it also makes it easy to enter pistachios into food tracking apps that already standardize everything to a 100 g reference.
For more food-by-food macro comparisons, the peanut calorie calculator gives similar per-gram and per-100g breakdowns for peanuts, and the almond calculator works in the same way for almonds.