Grapes Serving Size
Most expert sources agree that about 1 cup of grapes equals one serving for adults. Image Credit: istetiana/Moment/GettyImages There’s no denying that grapes are a healthy food for almost everybody — but what exactly constitutes a serving size of grapes? Most expert sources agree that about 1 cup of grapes equals one serving for adults. Advertisement The Serving Size for Grapes The USDA, which offers nutritional information for almost every food under the sun, describes 1 cup — or just over 150 grams, they say — as a typical serving size of grapes....