Quick Answer: 100g of blueberries is about 57 calories and roughly 2/3 cup, since a full cup of blueberries weighs around 148g. That same 100g has about 14.5g of carbs, 2.4g of fiber, and 10g of natural sugar. Use the calculator below to convert grams and cups.
Blueberries: Cups ↔ Grams Calculator
Type in either box — the other updates automatically. Berry size affects exactly how many fit in a cup.
100g of Blueberries: Full Nutrition Facts
| Nutrient | Amount per 100g |
|---|---|
| Calories | ~57 kcal |
| Carbohydrates | ~14.5g |
| Fiber | ~2.4g |
| Sugar | ~10g |
| Protein | ~0.7g |
| Fat | ~0.3g |
Keep reading for how 100g compares with common serving sizes, how many individual berries that works out to, and how blueberries stack up against other fruit.
100g vs Common Blueberry Servings
| Serving | Weight | Calories |
|---|---|---|
| 1/2 cup | ~74g | ~42 kcal |
| 100g | 100g | ~57 kcal |
| 1 cup | ~148g | ~84 kcal |
| 50 berries | ~80g | ~46 kcal |
Because blueberries vary noticeably in size from one batch to the next, a scale reads far more consistently than a berry count. As a rough guide, 100g of medium blueberries works out to about 60 to 65 individual berries.
Fresh vs Frozen Blueberries
Unsweetened frozen blueberries have essentially the same calorie and nutrient profile as fresh, since freezing doesn’t remove water the way drying does. Dried sweetened blueberries are a different story: at around 317 calories per 100g, they’re roughly five times more calorie-dense than fresh, both from moisture loss and added sugar, so 100g of dried berries is a far bigger dose of sugar than 100g of fresh ones.
Blueberries vs Other Fruit
At 57 calories per 100g, blueberries sit in the middle of the berry family, lower than dried fruit but a bit higher than strawberries, which run closer to 32 calories per 100g. Their fiber and antioxidant content make them a common pick for blood-sugar-conscious eating, alongside other options in our good snacks for diabetics guide.
Using 100g of Blueberries in Meals
A 100g portion is a convenient stir-in amount for oatmeal, yogurt, or a smoothie without pushing the calorie count up much, which is why blueberries show up often in recipes like overnight oats. Weighing the berries rather than eyeballing a handful keeps the count consistent from one bowl to the next.
Frequently Asked Questions
About 57 calories, mostly from natural carbohydrates and sugar, with 2.4g of fiber.
About 2/3 cup, since a full cup of blueberries weighs approximately 148g.
Roughly 60 to 65 individual berries for medium-sized blueberries, though this varies with berry size.
Yes, unsweetened frozen blueberries have essentially the same calorie and nutrient content as fresh ones.
Yes, significantly. Dried sweetened blueberries run about 317 calories per 100g, roughly five times higher than fresh, due to lost water and added sugar.
Final Answer: How Much Is 100g of Blueberries
100g of blueberries is about 57 calories and roughly 2/3 cup, with 14.5g of carbs and 2.4g of fiber. Fresh and unsweetened frozen berries share almost the same nutrition, while dried blueberries are far more calorie-dense. Weighing blueberries on a scale gives a more consistent number than measuring by cup or handful, since berry size varies so much.