178 milligrams of potassium in ½ medium (about 4 inch across)
| Portion | Potassium |
|---|---|
| 1 cup sections, with juice | 320 milligrams of potassium in 1 cup sections, with juice |
| ½ large (about 4-1/2 inch across) | 231 milligrams of potassium in ½ large (about 4-1/2 inch across) |
| ½ small (about 3-1/2 inch across) | 139 milligrams of potassium in ½ small (about 3-1/2 inch across) |
| 100 g | 139 milligrams of potassium in 100 g |
USDA FoodData Central, SR Legacy, record 173033. The source describes it as: Grapefruit, raw, pink and red and white, all areas.
U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center. FoodData Central. [Internet]. [cited 11 October 2026]. Available from https://fdc.nal.usda.gov/. Releases used: Foundation Foods, April 2026; SR Legacy, April 2018; Survey Foods (FNDDS 2021-2023), October 2024.
Data built on 11 October 2026 (data-2026-10-11).
