How do you find the potassium content of foods?

Determine the potassium content of particular foods by searching for the food in the U.S. Department of Agriculture’s National Nutrient Database. Alternatively, find a list of foods and their potassium content on Drugs.com.

The USDA’s National Nutrient Database alphabetizes foods and features a linkable page for each food in the database. You can also click on the search box to find a specific food, limit the search to particular food groups or see only foods from a particular manufacturer. On Drugs.com, you can access a list of high, medium and low potassium foods. For example, the website notes that one medium banana has 425 milligrams of potassium while 1/2 cup of cucumbers has just 80 milligrams.