Made by coagulating soy milk, 100g of firm tofu provides 683 mg of calcium, more than half the required daily amount.
Also known as finger millet, it contains 344 mg of calcium, three times the amount in milk.
A popular option for healthy snacking, ¼ cup of almonds contains around 95 mg of calcium.
Among its two types, white and black, one tablespoon (9 g) of the latter offers around 88 mg of calcium.
Dark leafy greens are the best source of all vital nutrients. Spinach provides around 99 mg of calcium per 100 g.