How Many Carbs in ¼ Cup (36g) of Blueberries?

4.4g

Net Carbs per ¼ Cup (36g)

✅ Keto Friendly

Total carbs: 5.2g | Fiber: 0.9g | Calories: 21 kcal

4.4g

Net Carbs

Calories

0.3g

Protein

0.1g

Fat

Calories	21 kcal
Total Carbohydrates	5.2g
Dietary Fiber	0.9g
Sugars	3.6g
→ Net Carbs	4.4g
Protein	0.3g
Total Fat	0.1g

Calories	57 kcal
Total Carbohydrates	14.5g
Dietary Fiber	2.4g
Sugars	10.0g
→ Net Carbs	12.1g
Protein	0.7g
Total Fat	0.3g

The Quick Answer

¼ Cup (36g) of Blueberries contains 4.4g net carbs and 21 calories. Net carbs are calculated by subtracting 0.9g of dietary fiber from 5.2g of total carbohydrates. This serving size weighs approximately 36g.

All nutrition data is sourced from the USDA FoodData Central database using raw, fresh blueberries values.

Is ¼ Cup (36g) of Blueberries Keto Friendly?

¼ Cup (36g) of Blueberries is keto friendly with just 4.4g net carbs — well within the 20–50g daily keto limit.

Net carbs are what matter on a ketogenic or low-carb diet — not total carbs. Only net carbs raise blood sugar and trigger insulin. Use our Keto Macro Calculator to find your personal daily net carb limit.

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How Net Carbs Are Calculated

Net carbs = Total Carbs − Dietary Fiber. For ¼ Cup (36g) of Blueberries: 5.2g − 0.9g = 4.4g net carbs. Fiber is subtracted because it passes through the digestive system unabsorbed and does not raise blood sugar or trigger an insulin response.

Frequently Asked Questions

¼ Cup (36g) of Blueberries contains 5.2g total carbohydrates and 4.4g net carbs. Net carbs are calculated by subtracting 0.9g of dietary fiber from the total carbs.

¼ Cup (36g) of Blueberries has 21 calories, with 0.3g protein, 0.1g fat, and 5.2g total carbohydrates.

¼ Cup (36g) of Blueberries has 4.4g net carbs and is classified as Keto Friendly. It fits within the typical keto range of 20-50g net carbs per day.

¼ Cup (36g) of Blueberries has 4.4g net carbs (5.2g total carbs minus 0.9g fiber). Net carbs are what count toward your daily keto limit.

Blueberries has 14.5g total carbs and 12.1g net carbs per 100g (57 calories). ¼ Cup (36g) weighs 36g, which is why it contains 4.4g net carbs for that portion.

Nutrition data sourced from USDA FoodData Central. Serving weight is an average; actual weight may vary slightly.