Peanuts are a popular, nutrient-dense snack packed with protein, healthy fats, and fiber. Whether you're tracking calories for weight management, meal planning, or athletic performance, knowing the exact calorie content per 100 grams is essential. This calculator provides a quick and accurate estimate of the calories in peanuts based on their preparation type — raw, dry-roasted, oil-roasted, or boiled — and the amount you plan to eat.
Designed for nutrition enthusiasts, dietitians, and anyone monitoring their daily intake, this tool uses standard USDA reference values to deliver reliable results. Simply select the peanut type, enter the weight in grams, and get instant calorie, protein, fat, and carbohydrate breakdowns. Use it to compare different preparations and make informed dietary choices.
🥜 Peanut Calorie Calculator
How to Use This Tool
Using the Peanut Calories Per 100g Calculator is straightforward. Start by selecting the type of peanut from the dropdown — raw, dry-roasted, oil-roasted, or boiled. Each preparation method has a different calorie density due to added oils or water content. Next, enter the weight of your peanut portion in grams (the default is 100g, but you can adjust it from 1g to 1000g). You can also click one of the preset buttons (28g, 50g, 100g, 150g) for common serving sizes. Finally, click the Calculate button to see the total calories, protein, fat, and carbohydrate content for your specific portion. Use the Reset button to clear the results and start over.
Formula Explained
The calculator uses standard USDA nutrient reference values per 100 grams for each peanut type. The formula is straightforward: Calories = (Calories per 100g) × (Weight in grams / 100). The same proportional scaling applies to protein, fat, and carbohydrates. For example, if raw peanuts have 567 kcal per 100g, then a 50g serving provides 567 × 0.5 = 283.5 kcal. The underlying data comes from the USDA FoodData Central database, which is the gold standard for nutritional information in the United States. You can explore the full dataset at the USDA FoodData Central website.
Worked Examples
Example 1: You have 85g of dry-roasted peanuts. Select "Dry-Roasted", enter 85g, and click Calculate. The result: 587 × 0.85 = 499 kcal, with 20.5g protein, 42.2g fat, and 18.1g carbs.
Example 2: You have 120g of boiled peanuts. Select "Boiled", enter 120g. Result: 318 × 1.2 = 382 kcal, with 16.2g protein, 26.4g fat, and 25.6g carbs. Boiled peanuts have significantly fewer calories because they absorb water during cooking.
Reference Table: Calories Per 100g
| Peanut Type | Calories (kcal) | Protein (g) | Fat (g) | Carbs (g) |
|---|---|---|---|---|
| Raw | 567 | 25.8 | 49.2 | 16.1 |
| Dry-Roasted | 587 | 24.1 | 49.7 | 21.3 |
| Oil-Roasted | 599 | 23.7 | 52.0 | 18.9 |
| Boiled | 318 | 13.5 | 22.0 | 21.3 |
Tips for Accurate Tracking
For the most accurate calorie count, weigh your peanuts on a kitchen scale rather than relying on volume measurements. A handful of peanuts can vary from 20g to 40g depending on size and how tightly they're packed. Also, note that flavored or honey-roasted peanuts will have added sugars and oils, increasing the calorie count beyond the values shown here. Always check the nutrition label for packaged products.
Frequently Asked Questions
Are peanuts good for weight loss? Peanuts are calorie-dense but also rich in protein and fiber, which promote satiety. Eating them in moderation (e.g., a 28g serving) can be part of a balanced weight-loss diet. The key is portion control — this calculator helps you stay on track.
Why do boiled peanuts have fewer calories? Boiling adds water, which increases the weight without adding calories. The same dry weight of peanuts has similar calories, but the water content dilutes the calorie density per gram. Boiled peanuts are about 40-50% water, while raw peanuts are only about 5% water.
Can I use this for peanut butter? Peanut butter has a different nutritional profile because it often contains added oils, salt, and sometimes sugar. For peanut butter, use a dedicated tool like the Peanut Nutrition Calculator for more accurate results.