how many ounces in one grapefruit
How many ounces is half of a grapefruit? According to ChaCha, the weight of an average grapefruit is 266 grams. According to Google, 266 grams is 9.38 ounces, or roughly 9 1/3. So half a grapefruit weighs 4.69, or â¦just a hair over 4 and a half ounces. Faith Sloan.