Whether you're baking a pumpkin pie, roasting fresh pumpkin slices, or adding pumpkin to a savory dish, knowing the calorie content per slice helps with meal planning and calorie tracking. This calculator estimates the calories in a single slice of pumpkin based on the total weight of the pumpkin (or pumpkin puree) and the number of slices you cut.
Simply enter the total weight of your pumpkin (in grams or ounces), the number of slices you plan to cut, and optionally adjust for added ingredients like sugar or oil. The tool provides a per-slice calorie estimate along with a breakdown of macronutrients (carbs, protein, fat) based on standard USDA values for fresh pumpkin. Perfect for diet planning, healthy eating, and nutrition enthusiasts.
🎃 Slice Calorie Estimator
How to Use This Tool
Using the Pumpkin Calories Per Slice Calculator is straightforward. Start by entering the total weight of your pumpkin (or pumpkin puree) in grams or ounces. Then specify how many slices you plan to cut. If you're adding sugar or oil to your recipe (common in pies or roasted dishes), enter those amounts as well — you can choose grams, teaspoons for sugar, or tablespoons for oil. Click "Calculate" to see the estimated calories per slice, along with a detailed macronutrient breakdown. The quick-fill buttons let you load common scenarios instantly.
Formula Explained
The calculator uses USDA nutrition data for raw pumpkin: approximately 26 kcal, 6.5 g carbohydrates, 1.0 g protein, and 0.1 g fat per 100 grams. For added sugar, we use 4 kcal per gram (1 teaspoon = 4.2 g). For added oil, we use 9 kcal per gram (1 tablespoon = 13.6 g). The per-slice values are derived by dividing the total weight and added ingredients by the number of slices.
Formula: Calories per slice = (slice weight in g / 100) × 26 + (added sugar per slice in g × 4) + (added oil per slice in g × 9)
Worked Examples
Example 1: A 500 g pumpkin cut into 8 slices with no additions. Slice weight = 62.5 g. Calories from pumpkin = (62.5/100) × 26 = 16.25 kcal. Total per slice ≈ 16.3 kcal.
Example 2: A 800 g pumpkin cut into 10 slices, with 20 g sugar and 10 g oil added. Slice weight = 80 g. Pumpkin calories = (80/100) × 26 = 20.8 kcal. Sugar per slice = 2 g → 8 kcal. Oil per slice = 1 g → 9 kcal. Total = 20.8 + 8 + 9 = 37.8 kcal per slice.
Tips for Accurate Results
Weigh your pumpkin after removing seeds and stringy pulp for the most accurate calorie estimate. If using canned pumpkin puree, the nutrition is similar to fresh — but check the label as some brands add sugar. For roasted pumpkin, the water content decreases, concentrating calories slightly; this calculator assumes raw weight. For baked goods like pie, the added crust and other ingredients will add significant calories — this tool only accounts for the pumpkin, sugar, and oil you specify.
Frequently Asked Questions
Does the calculator work for canned pumpkin puree? Yes, the nutrition profile of plain canned pumpkin is very similar to fresh. Just enter the weight of the puree.
What if I add other ingredients like butter or cream? This calculator only accounts for sugar and oil. For other fats or dairy, you'll need to add their calories separately. For example, 1 tablespoon of butter (14 g) adds about 100 kcal.
How accurate are the USDA values? The USDA FoodData Central database is the gold standard for nutrition data. Values for raw pumpkin are well-established, but individual varieties may vary slightly.
Can I use this for other squashes? The nutrition of butternut, acorn, and other winter squashes is similar but not identical. For best accuracy, use a calculator specific to that squash type.
Additional Resources
For more detailed nutrition data, visit the USDA FoodData Central. You can also explore our Pumpkin Calories Per Handful Calculator for a different serving size, or the Daily Water Intake Calculator for hydration planning.