Ruby grapefruit
Low GI
GL 2.4 per typical piece (120 g) · GL 2 per 100 g
- Very low glycemic load
- Moderate natural sugar content
Ruby grapefruit has a glycemic index of 25, the same as plain Grapefruit (25). One typical piece (120 g) adds a glycemic load of 2.4.
Updated Mar 15, 2026 · Sources: Logi Nutrition Team (USDA-derived composition, AI-assisted) · Not medical advice · Report an error
Forms of Grapefruit
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Ruby grapefruit is one of the 11,117 foods Logi scores when you photograph a meal — with the portion.
Nutrition Facts (per 100g)
per 100g
| Calories | 33 kcal |
| Carbohydrates | 8.1 g |
| Sugars (Total) | 7 g |
| Natural | 7 g |
| Added | 0 g |
| Fiber | 1.1 g |
| Soluble | 0.3 g |
| Insoluble | 0.8 g |
| Protein | 0.7 g |
| Fat | 0.1 g |
| Saturated | 0 g |
| Unsaturated | 0.1 g |
| Sodium | 1 mg |
Processing Level
Why this score?
- Very low glycemic load
- Minimal processing
- Low calorie, high water content
- Moderate natural sugar content
- Limited fiber compared to some fruits
Allergens
No EU-14 allergen listed
Low-GI recipes on Logi Food Coach
Frequently Asked Questions
What is the glycemic index of Ruby grapefruit?
Ruby grapefruit has a glycemic index of 25 (Low). One typical piece (120 g) has a glycemic load of 2.4; per 100 g the glycemic load is 2.
Is Ruby grapefruit good for people with insulin resistance?
Ruby grapefruit has a low glycemic index (25), making it a good option for people with insulin resistance. It causes a slow, gradual rise in blood sugar.
Which form of Grapefruit has the lowest glycemic load?
Ruby grapefruit has the lowest glycemic load of all forms of Grapefruit in this database (2 per 100 g).
Check Ruby grapefruit in the Logi app, with your portion.
