Blackberries is keto: it has ~3 g of net carbs per 1/2 cup, within the keto diet's 5 g-per-serving limit.
Net carbs
3 g
per 1/2 cup
These are the carbs that count on keto: total carbs minus fiber.
A half-cup serving has about 3.1 g net carbs, making blackberries one of the most keto-friendly fruits.
Nutrition facts for blackberries
0.4 g
Fat
1 g
Protein
3.8 g
Fiber
Why blackberries is keto?
On keto the goal is to stay under ~5 g of net carbs per serving; blackberries has 3 g per 1/2 cup (6 g total − 3 g of fiber).
How much blackberries can I eat on keto?
To stay under 5 g of net carbs, the limit is ~116 g of blackberries.
Related
No
Cantaloupe
13 g net
/ 1 cup, cubed
No
Mango
46 g net
/ 1 medium fruit
No
Banana
23 g net
/ 1 medium banana
In moderation
Pineapple
9 g net
/ 1 medium slice
No
Blueberry
17 g net
/ 1 cup
No
Grapes
25 g net
/ 1 cup (stems removed)
See all: Keto fruits
Source: nutritional estimate (USDA-style reference) · Confidence: high
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Reviewed by the Ketorai team · Last updated: July 2, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Something off? Let us know.
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