How much food do you need to store for 10 people for 2 years?

To determine how much food to store for 10 people for 2 years, consider the average daily caloric intake, which is about 2,000 to 2,500 calories per person. For 10 people, this totals approximately 20,000 to 25,000 calories per day, or around 7.3 to 9.1 million calories over two years. Additionally, you should account for a balanced diet, including grains, proteins, fruits, and vegetables, which may require roughly 1.5 to 2 tons of food per person over that period. Therefore, for 10 people, you would need approximately 15 to 20 tons of food in total.