One cup of grapes (about 92 g) provides roughly 60 calories and vitamin C, per USDA FoodData Central. Grapes are mostly water and natural sugar — a sweet, portable snack. Because they’re small, a measured cup prevents mindless overeating. Freeze them for a refreshing, low-calorie treat instead of candy.

Key facts:

  • 1 cup grapes: ~60 kcal
  • Vitamin C
  • Mostly water + natural sugar
  • Measure the cup