Plums are a juicy, low-calorie fruit packed with vitamins, fiber, and antioxidants. Whether you're tracking your daily intake, meal prepping, or simply curious about the calories in a single slice, this calculator gives you an accurate estimate based on the weight of your plum and the thickness of each slice.
Simply enter the total weight of your plum (in grams or ounces), the number of slices you plan to cut, and optionally adjust for the peel (skin) — which adds a small amount of fiber and calories. The tool instantly calculates calories per slice, total calories for the whole plum, and a breakdown of macronutrients (carbs, protein, fat). Perfect for dieters, nutrition enthusiasts, and anyone building a healthy eating plan.
🍑 Plum Calories Per Slice
How to Use This Tool
Using the Plum Calories Per Slice Calculator is straightforward. Start by weighing your whole plum on a kitchen scale — enter the weight in grams or ounces. Next, decide how many slices you'll cut (e.g., 8 slices for a medium plum). Optionally, indicate whether you're eating the peel (skin) or not, as the peel adds a small amount of fiber and calories. Click "Calculate" to see the calories per slice, total calories for the whole fruit, and a macronutrient breakdown (carbs, protein, fat). Use the preset buttons for quick estimates based on common plum sizes.
Formula Explained
The calculation is based on standard USDA nutrition data for raw plums. With skin, plums contain approximately 46 kcal per 100g; without skin, about 42 kcal per 100g. The formula is:
Calories per slice = (Plum weight in grams / 100) × Calories per 100g / Number of slices
Macronutrients are derived similarly: carbs ~11.4g/100g (with skin) or 10.2g/100g (without), protein ~0.7g/100g, fat ~0.3g/100g. These values are averages and may vary slightly by plum variety and ripeness.
Worked Examples
Example 1: A medium plum weighing 75g, cut into 8 slices, with skin. Calories per slice = (75/100) × 46 / 8 = 34.5 / 8 = 4.3 kcal per slice. Total calories = 34.5 kcal.
Example 2: A large plum weighing 100g, cut into 10 slices, without skin. Calories per slice = (100/100) × 42 / 10 = 42 / 10 = 4.2 kcal per slice. Total calories = 42 kcal.
Tips for Accurate Tracking
For the most accurate results, use a digital kitchen scale to weigh your plum. If you're tracking calories for weight management, remember that the peel contains additional fiber and antioxidants — including it is generally healthier. Slicing uniformly helps ensure each slice has similar calorie content. If you're meal prepping, you can multiply the per-slice value by the number of slices you plan to eat.
Frequently Asked Questions
Q: Are all plum varieties the same in calories? A: No, but differences are small. Red, black, and yellow plums have similar calorie densities (40–50 kcal/100g). Japanese plums tend to be slightly sweeter but calorie differences are negligible for most tracking purposes.
Q: Does ripeness affect calorie count? A: Ripeness changes sugar composition but not total calories significantly. A very ripe plum may have slightly more sugar but also more water loss, so the calorie density remains similar.
Q: Can I use this for dried plums (prunes)? A: No, prunes are much more calorie-dense (~240 kcal/100g) due to water removal. This calculator is for fresh plums only.
Q: How does this compare to other fruits? A: Plums are lower in calories than bananas (~89 kcal/100g) and grapes (~69 kcal/100g), but similar to apples (~52 kcal/100g) and peaches (~39 kcal/100g). For more fruit comparisons, see our Mango Calories Per Slice Calculator and Lemon Calories Per Handful Calculator.
Real-World Applications
This calculator is useful for dietitians planning fruit portions, fitness enthusiasts tracking macros, and anyone following a calorie-controlled diet. Plums are a great snack for weight loss because they are low in calories, high in water, and provide fiber that promotes satiety. Use the per-slice data to add precise amounts to salads, yogurt bowls, or desserts.
For more nutrition tools, explore our Lentil Calories Per Slice Calculator and Cornmeal Calories Per Slice Calculator.