Most of us consume between 2,000-3,000 calories a day right now. However, in emergency situations, most humans will be able to survive for short periods of time with 500-800 calories per day. The average person would need 3 to 5 pounds of food a day on average. You need enough survival food to provide a minimum of 2000 calories per person and one gallon of drinking water per day.
According to the Federal Emergency Management Agency, store a minimum of two weeks of emergency food or 28,000 calories and fourteen gallons of water per person. A good base number to target just for basic survival is a minimum of 1200-1500 calories. The amount of calories you need to survive depends on your age, weight, activity level and gender. For long-term health, most people will need a minimum of 1200 calories per day.
As a general rule, most people say “about 2,000 calories a day at least. The foods in the table are based on FEMA suggested short-term emergency foods that are ready to eat, non-perishable, that do not require special preparation, water, or refrigeration. However, you should select foods that members of your household can consume without too much complaint. Either food source will provide you with different levels of energy (calories) and nutrients despite weighing the same amount.
Adjust the foods you store based on what your family likes to eat and experiment with what works for your survival group. The best way to find an accurate description of how much food you need to eat in a day is by using a reliable calorie calculator. The only cause I can see is additional stress: I sleep well, the food hasn't changed, my activity level hasn't changed. If your main concern is knowing how much food you should eat, you should still know your caloric values.
However, knowing how much food is needed to survive a day can help you prepare for short-term emergencies. Unless you've lived an isolated life away from society, you're likely to understand how natural disasters and public health crises can prevent your access to food and water. Hunting and fishing can increase food supplies, but if a person hasn't really, it's a steep learning curve. Therefore, if you want to lose weight, try to eat healthier foods and avoid unhealthy options (such as fried junk food).
The minimum requirement is a three-week water supply that supplies at least half a gallon per person every day. Ok, if you're ready to start stockpiling emergency food, let's look at some real-life examples of how many survival foods to store. You may be well below this amount for a few days or a week, but emergencies can be a burden on your body.