31% of the WHO 25g/day free-sugar guideline
What it takes to burn this off
Estimated for a typical 70kg (154 lb) adult — actual calories burned vary by body weight, pace, and fitness level. General reference only, not personalized advice.
10 grapes weigh about 50g and carry roughly 7–8.5g of natural sugar — for quick mental math, 5 grapes is about half that and 15 grapes about one and a half times that. Gram for gram, grapes are the highest-sugar common fruit in this reference (excluding dates), since they have very little fibre or water weight diluting the sugar.
Pairs well with: A small handful of nuts alongside adds protein/fat to slow the glucose response — grapes are one of the fruits this site's fruit-myth guide flags as easy to overeat well past a 10-grape serving.
Figures are for general reference, not personalized medical guidance; always confirm with a lab-tested label or professional for dietary decisions.
Source: USDA FoodData Central — 15.5g sugar per 100g; applied to 10 typical seedless grapes (~50g). Total carbs: ~18.1g carbs per 100g, scaled the same way. GI: medium, per published glycemic index research. (last verified 2026-08-22)