Red seedless grapes contain 20 grams of sugar per serving, and large oranges and apples contain 23 grams of sugar each. One banana has 17 grams of sugar.
Strawberries contain approximately 7 grams of sugar per serving, but the amount of sugar in the berries increases slightly as they ripen. Fresh pineapples contain 9 grams of sugar per serving, and one cup of sliced peaches contains 12 grams of sugar. A whole, ripe peach contains 15 grams of sugar. The size of the fruit, whether it is peeled or eaten whole and how ripe the fruit is can slightly change the amount of sugar per serving.