How Much Sugar Is in Blackberries?
A cup of blackberries has about 7 g of natural sugar — one of the lowest-sugar fruits you can eat, with roughly 8 g of fibre in the same cup.
in 1 cup (144 g) · about 1.7 teaspoons
- Per serving
- 7 g
- Per 100 g
- 4.9 g
- Type
- Natural sugar
- In teaspoons
- ≈ 1.7 tsp
An easy fit for a low-sugar day.
A full cup of blackberries has only about 7 g of sugar, right alongside strawberries as one of the lowest-sugar fruits around. What stands out is the fibre — nearly 8 g per cup, more than the sugar itself, which is unusual for fruit and makes blackberries very filling for the sugar cost.
Because the sugar-to-volume ratio is so good, blackberries are an easy fruit to eat generously without the total climbing fast the way it does with grapes. Mixing them with other low-sugar berries stretches a bowl further for even less sugar per bite.
Lower-sugar swaps
- Mix with strawberries for a bigger bowl at a similarly low sugar cost
- Reach for blackberries instead of grapes when you want to snack by the handful
Frequently asked questions
- Are blackberries a good low-sugar snack?
- Yes — a full cup has only about 7 g of sugar alongside roughly 8 g of fibre, making them one of the best fruits for a low-sugar day.
- Do blackberries have less sugar than strawberries?
- They're close — blackberries run slightly lower per 100 g, but both are among the lowest-sugar fruits you can eat.
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Sugar values from USDA FoodData Central; actual amounts vary by brand, ripeness, and recipe. Last updated 2026-08-09.