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One cup of diced cantaloupe holds about 12–14 grams of natural sugar, depending on cut and ripeness.

One cup of rockmelon (cantaloupe) packs about 12–14 g of natural sugar; 100 g gives ~7.9 g.

One cup of yellow watermelon holds about 9–10 grams of natural sugar, similar to red watermelon.

One cup of watermelon chunks has about 9.4 grams of natural sugar, based on USDA data.

One medium watermelon slice (about 1/16 of a melon, ~286 g) contains roughly 18 g of sugar.

Watermelon contains about 6.2 grams of natural sugar per 100 grams of fruit.

A medium whole pomegranate holds about 39 g of natural sugar, while smaller fruits can land closer to 25–30 g.

One cup of raw pineapple has about 16 grams of sugar; canned in syrup or juice and pineapple juice contain much more.

One cup of pomegranate seeds (arils) has about 24 g of natural sugar; a 1/2 cup serving has about 12 g.

Pomelo sugar varies by variety; per 100 g it’s about 5–10 g, and one cup of sections (190 g) holds roughly 10–19 g.