How many carbs are in grapes?
One cup of red seedless grapes (140g) has about 28g of carbohydrate. The USDA Foundation entry for this variety records no fiber, so net carbs equal total carbs at 28g.
Carbs by portion
| Portion | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 1 cup red seedless grapes (140g) | 28.3g | 0.0g | 28.3g |
| 100 grams | 20.2g | 0.0g | 20.2g |
Net carbs
A one-cup serving (140g) of red seedless grapes has about 28g of net carbs. The USDA Foundation data for this variety records no fiber, so total carbs and net carbs are the same number. Grape sugar is mostly glucose and fructose, which absorb quickly. See the net carbs guide for when net carbs matter and when to stick with the total.
Glycemic index of grapes
The glycemic index of grapes is about 59. A GI of 59 puts grapes in the moderate range. The sugar absorbs faster than in many other fruits because there is little fiber in the flesh. Grape juice, with the skin and pulp removed, has a higher GI.
For diabetes
A one-cup serving of grapes is 28g of carbs with no recorded fiber to slow the rise. That is a full meal-sized carb load from a single food. Grapes are easy to overeat because each grape is small and sweet. A half-cup (70g) brings the count to about 14g, which fits more comfortably alongside a protein or fat. Most diabetes care teams dose on total carbs from fruit, not net. See the diabetes carb-counting guide for how to work fruit into a meal plan.
Keto and low carb
One cup of grapes has about 28g of net carbs, which fills or exceeds a full day's keto budget of 20 to 30g. Grapes do not fit most keto plans. A very small portion of about 10 grapes (roughly 50g) comes to about 10g of net carbs and can work in a targeted approach if the rest of the day is extremely low carb.
Good to know
Portion creep is the main risk with grapes. A cup looks small, but it holds about 20 to 25 individual grapes depending on size, and many people eat two or three cups while snacking from a bowl without counting. Measuring by the cup or by weight keeps the number honest. The comparison to raisins is worth knowing: raisins are dried grapes and carry roughly 79g of carbs per 100g, about four times the carb density of fresh grapes. Concord and other seeded varieties have a similar per-cup carb count to red seedless.
Full nutrition (per 100g)
- Calories: 0 kcal
- Carbohydrate: 20.2g
- Fiber: 0g
- Sugars: n/ag
- Protein: 0.91g
- Fat: 0.16g
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Get the appFrequently asked questions
How many carbs are in grapes?
One cup of red seedless grapes (140g) has about 28g of carbohydrate. Per 100g the count is about 20g.
How many net carbs are in grapes?
About 28g per cup (140g). The USDA data for red seedless grapes records no measurable fiber, so net carbs equal total carbs.
How many carbs are in 10 grapes?
Ten red seedless grapes weigh roughly 50g and contain about 10g of carbohydrate.
What is the glycemic index of grapes?
Grapes have a glycemic index of 59, which is in the moderate range. Grape juice is higher because the fiber and pulp are removed.
Are grapes OK for diabetics?
Grapes can fit a diabetes meal plan in a measured portion. One cup is 28g of carbs with no fiber buffer, so a half-cup or smaller serving is often easier to manage alongside other foods.
Are grapes keto?
No, not in normal serving sizes. One cup has about 28g of net carbs, which is a full day's keto budget. A small handful of about 10 grapes (10g net) can occasionally fit a targeted keto approach.