Sources of Calcium Most American diets are deficient in calcium. Calcium can be found in a variety of foods in the food guide pyramid. Dairy products generally have more calcium per serving than other foods, and more calcium is absorbed from dairy products than other foods. One cup of spinach has 245 mg, while one cup of kale has 95 mg of calcium, less of which is absorbed. Nevertheless, spinach and kale, along with calcium-fortified orange juice and soymilk, tofu, almonds and broccoli, are good sources of calcium for vegetarians, if eaten abundantly.
Calcium supplements are also available, and often recommended.