7–9gsugar
7gnatural sugar
11–13gtotal carbs
Lowglycemic index
32% of the WHO 25g/day free-sugar guideline
What it takes to burn this off
32calories from this sugar
~7 minbrisk walk (~5.6 km/h)
~3 minrunning (~8 km/h)
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.
Half a grapefruit is the standard serving — less sweet than an orange of similar size, with a bitter edge from naringin.
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 — grapefruit, raw, pink and red. Total carbs: ~10.7g carbs per 100g, scaled to a 120g serving. GI: low, per published glycemic index research. (last verified 2026-08-23)