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There are 225 calories in 1 cup of Kidney Beans (without Salt, Cooked, Boiled). Calorie Breakdown: 3% fat, 73% carbs, 24% prot.
Potassium in Kidney Beans. One hundred grams of soaked and cooked, dried kidney beans, which is equal to about a half cup, contain 405 milligrams of potassium. That's about 9 percent of the recommended daily allowance of 4,700 milligrams. The same amount of canned kidney beans supplies 277 milligrams of potassium.