The carbohydrate content in grapes varies slightly depending on the source and serving size, but generally:

• One cup of fresh grapes (about 151-160 grams) contains approximately 27 to 29 grams of total carbohydrates

• This includes about 1.4 grams of fiber, resulting in roughly 25.8 to 27.5 grams of net carbs (total carbs minus fiber)

• The sugar content in one cup of grapes is around 23 to 25 grams, mostly natural sugars like glucose and fructose

If considering a single grape, it contains about 0.9 grams of carbohydrates

. In summary, for a typical serving of one cup of grapes, expect about 27 grams of total carbs and around 26 grams of net carbs.