FiberUp
How much fiber is in grapefruit?
Grapefruit has 2 g of fiber per 1/2 medium (123 g). That is 7% of the daily value and a moderate amount for a fruit.
Soluble vs insoluble
The split is approximate and comes from USDA SR Legacy analyses where available. Soluble fiber dissolves into a gel and is the type most linked to cholesterol and blood sugar effects. Insoluble fiber adds bulk and keeps things moving.
About grapefruit and fiber
Half a grapefruit provides 2 grams of fiber with a high soluble share from pectin. It is low FODMAP at this serving.
How grapefruit compares to other fruits
Per typical serving. The highest fruit in the database is raspberries at 8 g.
| Food | Serving | Fiber | Per 100 g | % DV |
|---|---|---|---|---|
| Kiwi | 1 medium | 2.1 g | 3 g | 8% |
| Dried Cranberries | 1/4 cup | 2 g | 5 g | 7% |
| Dried Mango | 1/4 cup | 2 g | 5 g | 7% |
| Grapefruit | 1/2 medium | 2 g | 1.6 g | 7% |
| Plum | 2 small | 1.8 g | 1.4 g | 6% |
| Shredded Coconut | 2 tbsp | 1.8 g | 12 g | 6% |
| Raisins | 1/4 cup | 1.5 g | 3.7 g | 5% |
Servings to reach a daily goal
servings of grapefruit to reach 25 g, the adequate intake for adult women
servings of grapefruit to reach 38 g, the adequate intake for adult men
Nobody should get all their fiber from one food. Gut bacteria respond to variety, and the fiber calculator shows a mixed day that reaches your number.
USDA entries for grapefruit
Grams of fiber per 100 g from USDA FoodData Central (snapshot 2026-10-11). Different preparations and varieties explain the spread.
| USDA description | Fiber / 100 g | Soluble | Insoluble |
|---|---|---|---|
| Grapefruit, raw | 0.7 g | – | – |
| Grapefruit, raw, white, all areas | 1.1 g | – | – |
| Grapefruit, raw, pink and red, Florida | 1.1 g | – | – |
| Grapefruit, raw, pink and red, all areas | 1.6 g | – | – |
| Grapefruit, raw, pink and red and white, all areas | 1.1 g | – | – |
| Grapefruit, sections, canned, water pack, solids and liquids | 0.4 g | – | – |
| Grapefruit, canned | 0.4 g | – | – |
Frequently asked questions
How much fiber is in grapefruit?
Is grapefruit high in fiber?
Is the fiber in grapefruit soluble or insoluble?
How many servings of grapefruit would reach a daily fiber goal?
Values are per typical serving from USDA FoodData Central and standard references, rounded to one decimal. Actual fiber varies with variety, ripeness, and preparation. This is general nutrition information, not medical advice.