Blueberries calories per 100g

Raw blueberries contain about 57 calories per 100g, according to USDA FoodData Central. That same 100g serving also provides roughly 14.5g of carbohydrate, 2.4g of fiber, and less than 1g of fat and protein. Most of the calories come from natural fruit sugars and carbohydrates, not fat.

To put that in perspective, 100g of blueberries is about 2/3 cup. A full cup of blueberries is usually closer to 148g, which comes out to about 84 calories. If you are tracking macros or calories closely, weighing blueberries is more accurate than eyeballing a cup.

What 100g of blueberries looks like

A 100g portion is a small bowl of berries, not a huge serving. Many people eat blueberries by the cup, so calorie totals can rise faster than expected if you snack straight from the container.

Here are a few quick estimates: 50g is about 29 calories, 100g is about 57 calories, 1 cup is about 84 calories, and 2 cups is about 168 calories. If you add yogurt, granola, nut butter, or sweetened toppings, the calorie total can climb quickly even though the blueberries themselves are modest in calories.

Fresh vs frozen vs dried blueberries

Fresh and plain frozen blueberries are usually very similar in calories per 100g. Freezing does not meaningfully change the calorie count, though the texture and water content can affect how they measure by volume. The main thing to check is whether the frozen product has added sugar or syrup.

Dried blueberries are very different. Removing water concentrates the calories and sugar, so a 100g serving of dried blueberries is much more calorie-dense than 100g of fresh berries. If you are comparing labels, always check whether the fruit is fresh, frozen, unsweetened, sweetened, or dried.

Why blueberries are a smart calorie choice

Blueberries are not only low in calories per 100g, they also deliver fiber and micronutrients like vitamin C and vitamin K. That combination can help you feel more satisfied than you would from a lower-fiber snack with the same calorie count.

For people trying to balance nutrition and body composition, blueberries can be a helpful pre-workout or post-workout carb source when paired with protein, such as Greek yogurt or cottage cheese. If you log meals by photo, Fitnit can help estimate portions and macros so snack calories are easier to keep track of without guesswork.

Tips

• Weigh blueberries in grams if you want the most accurate calorie count.
• Check labels on frozen blueberries for added sugar, syrup, or juice concentrate.
• Remember that toppings often add more calories than the berries themselves.
• Use blueberries as a high-volume snack when you want something sweet without a big calorie load.
• If you mix blueberries into yogurt, oatmeal, or smoothies, log the full recipe, not just the fruit.