Potassium in sweet potato
Sweet potato has 542 mg of potassium per 1 medium (2" dia, 5" long, raw) (114 g), which is 12% of the Daily Value. Per 100 g it contains 475 mg.
Potassium by portion size
| Portion | Weight | Potassium (mg) | % Daily Value |
|---|---|---|---|
| 1 cup | 200 g | 950 | |
| 1 large | 180 g | 855 | |
| 1 medium (2" dia, 5" long, raw) | 114 g | 542 | |
| 1 small | 60 g | 285 | |
| 100 g | 100 g | 475 |
Other forms of sweet potato
| Form | Per 100 g | Per serving |
|---|---|---|
| Raw | 337 mg | 448 mg (1 cup, cubes) |
| Boiled, without skin | 230 mg | 347 mg (1 medium) |
About potassium
Potassium is an electrolyte that helps regulate fluid balance, nerve signals and muscle contractions, and a higher intake is linked to lower blood pressure. The Daily Value is 4,700 mg, which most people do not reach. Beans, potatoes, leafy greens, fish, dairy and fruit are the main sources.
Foods with more potassium than sweet potato
- Beet greens, cooked (boiled, drained, without salt): 1,309 mg per 1 cup (1" pieces) (28% DV)
- Beans, adzuki (mature seeds, cooked, boiled, without salt): 1,224 mg per 1 cup (26% DV)
- Beans, white (mature seeds, canned): 1,189 mg per 1 cup (25% DV)
- Avocados, raw (Florida): 1,067 mg per 1 fruit without skin and seeds (23% DV)
- Soybeans, green (cooked, boiled, drained, without salt): 970 mg per 1 cup (21% DV)
All foods high in potassium · Full sweet potato nutrition facts
Frequently asked questions
How much potassium is in sweet potato?
Sweet potato has 542 mg of potassium per 1 medium (2" dia, 5" long, raw) (114 g), which is 12% of the Daily Value. Per 100 g it contains 475 mg.
Is sweet potato high in potassium?
Yes. At 12% of the Daily Value per serving, sweet potato counts as a good source under FDA labeling rules (10% is 'good', 20% is 'high').
How much potassium do I need a day?
The FDA Daily Value is 4,700 mg. One 1 medium (2" dia, 5" long, raw) of sweet potato covers 12% of it.
Source: USDA FoodData Central #168483.
Nutrient values are from USDA FoodData Central (SR Legacy, April 2018; Foundation Foods, April 2026) and shown per serving as described on each page. %DV uses the FDA Daily Values for adults and children aged 4 and over. This is nutrition data for general information, not medical or dietary advice; talk to a clinician or registered dietitian about your own needs. How the numbers are calculated.