Red grape has 69 kcal and 15.5 g sugar per 100 g. The deep color comes from plant compounds studied for cardiovascular benefits. Nutritionally identical to green grapes — the color difference is in plant compounds, not macros.
How should I track Grape, red?
When tracking Grape, red, weigh the edible portion — after peeling, coring, or removing seeds. The part you throw away does not count, but it can make up 20–40% of the total weight depending on the fruit. A systematic review (Whitton et al., Adv Nutr 2022) found that fruits are among the most commonly misestimated food groups. One more thing to watch: fresh and dried versions have very different calorie density. A handful of dried fruit can have the same calories as a whole bowl of fresh — always double-check which form you are logging.