Whether you’re topping a salad, layering a dessert, or adding a handful to your morning yogurt, knowing the calorie count of strawberry slices helps you stay on track with your nutrition goals. This calculator lets you quickly estimate the calories in any number of strawberry slices based on average slice weight and standard USDA nutrition data.
Simply enter the number of slices, choose a slice thickness (thin, medium, or thick), and optionally adjust for the strawberry size (small, medium, large). The tool instantly returns total calories, plus a breakdown of carbs, sugar, fiber, and fat per slice. Perfect for meal preppers, calorie counters, and anyone curious about the nutritional impact of their fruit portions.
🍓 Strawberry Calories Per Slice
📊 Results
How to Use This Tool
Using the Strawberry Calories Per Slice Calculator is straightforward. Start by entering the number of strawberry slices you plan to eat. Then select the slice thickness — thin slices (about 3g each) are typical for garnishes, medium slices (5g) are standard for salads and yogurt, and thick slices (8g) work well for desserts or snacking. Optionally adjust for strawberry size: small berries weigh less per slice, while large berries give you more volume. Click "Calculate" to see total calories, per-slice calories, and a full macronutrient breakdown including carbs, sugar, fiber, and fat.
💡 Pro Tip: For the most accurate results, weigh a few slices on a kitchen scale and adjust the slice weight in your mind. The default values are based on average USDA data for medium strawberries.
Formula Explained
The calculation uses the USDA National Nutrient Database value for raw strawberries: approximately 32 calories per 100 grams (0.32 kcal/g). The tool multiplies the total weight of your slices (number of slices × weight per slice × size multiplier) by this calorie density. Macronutrients are derived from standard composition: strawberries are about 7.7% carbohydrates, 4.9% sugars, 2% dietary fiber, and 0.3% fat by weight. The formula is:
Total Calories = (Slices × Slice Weight × Size Factor) × 0.32
Where slice weight is 3g (thin), 5g (medium), or 8g (thick), and size factor is 0.8 (small), 1.0 (medium), or 1.2 (large).
Worked Examples
Example 1: 10 medium slices, medium strawberry → 10 × 5g × 1.0 = 50g total → 50 × 0.32 = 16.0 kcal total, 1.6 kcal per slice.
Example 2: 15 thick slices, large strawberry → 15 × 8g × 1.2 = 144g total → 144 × 0.32 = 46.1 kcal total, 3.1 kcal per slice.
Example 3: 8 thin slices, small strawberry → 8 × 3g × 0.8 = 19.2g total → 19.2 × 0.32 = 6.1 kcal total, 0.8 kcal per slice.
Factors Affecting Accuracy
Several variables can influence the actual calorie content of your strawberry slices. Strawberry size and variety (e.g., Albion vs. Seascape) affect water content and sugar density. Ripeness also matters — riper berries have slightly higher sugar content. The slice thickness estimate is an average; actual slice weight depends on how evenly you cut. For precise tracking, especially in meal prep or calorie-restricted diets, use a digital kitchen scale to weigh your slices and input the total weight manually. The tool's size multiplier (0.8–1.2) accounts for typical variation in berry size, but individual berries can fall outside this range.
Real-World Applications
This calculator is useful for a variety of scenarios: building a low-calorie fruit salad, calculating toppings for pancakes or waffles, portioning snacks for kids, or logging ingredients in a calorie-tracking app like MyFitnessPal. Strawberries are naturally low in calories and high in vitamin C, manganese, and antioxidants, making them a popular choice for weight management and healthy eating. For more fruit calorie comparisons, check out our Banana Calories Per Serving Calculator or the Blueberry Calories Per Cup Calculator.
Frequently Asked Questions
Q: Are frozen strawberry slices different in calories?
A: Frozen strawberries have a similar calorie density (about 35 kcal per 100g) because they are typically packed without added sugar. However, if the package includes syrup or sugar, calories can be significantly higher — always check the label.
Q: How many slices are in one medium strawberry?
A: A medium strawberry (about 12g whole) yields roughly 2–3 medium slices, depending on how you cut it. This calculator helps you scale up from individual slices to a full serving.
Q: Can I use this for other berries?
A: The calorie density varies by berry. For example, blueberries have about 57 kcal per 100g, while raspberries have 52 kcal per 100g. This tool is calibrated specifically for strawberries. For other fruits, see our Fruit Calorie Calculator.
Q: Why does the size multiplier matter?
A: Large strawberries can weigh 20–30g each, while small ones may be only 5–8g. Using the same slice thickness on different-sized berries changes the actual weight per slice, so the multiplier adjusts for that variation.