There are 23 grams of sugar in 1 cup of European-type green grapes. In green grapes, there are zero grams of saturated fat and one gram of dietary fiber. There are 104 calories in 1 cup of green grapes.
Grapes are a very good source of certain vitamins and many nutrients. One cup of grapes can provide 22 micrograms of vitamin K based on a 2000 caloric intake per day. Similarly, grapes contain 16 milligrams of vitamin C. The minerals and nutrients found in grapes are iron, calcium, phosphorus, magnesium, resveratrol, quercetin, catechins and lutein.
Grapes also have many health benefits. They can have antioxidant, anti-inflammatory and cardiovascular benefits, because of all the phytonutrients found in them. Grapes are considered low glycemic index foods, so they may be beneficial for stabilizing blood sugar levels.