Emergency Food Calculator

Calculate meal coverage

Your food result

Why this tool counts meal slots instead of calories

This is an emergency inventory calculator, not a diet planner. Individual calorie needs differ by age, body size, activity, health, pregnancy and many other factors. A simple count of meal-equivalent portions is safer and more useful for a household audit: if four people expect three meals a day for seven days, the reserve needs to cover eighty-four meal slots before snacks or special requirements are considered.

A “meal-equivalent portion” does not have to be one tin or one packet. It means enough shelf-stable food to cover one person’s planned meal. A large tin may cover multiple portions; a small snack bar may not cover one. The useful part is translating a vague cupboard into a count you can review.

Build around foods you will actually eat

Emergency stores fail when they are treated as museum exhibits. Choose ordinary long-life foods the household already tolerates, rotate them into normal meals and replace them. Include items that can be eaten without cooking because power and gas can fail together. UK Prepare specifically recommends non-perishable foods that do not require cooking, including ready-to-eat tinned foods, plus a manual tin opener.

Then layer household-specific needs: baby formula, allergy-safe foods, pet food, medication-related dietary requirements and anything required by a clinician. The calculator deliberately does not guess those for you. It gives a base count and leaves specialist requirements visible instead of hiding them inside a generic calorie number.

AI doomsday scenario: food fails long before farms do

Our fictional AI-collapse scenario is less about crops disappearing overnight and more about coordination breaking. Warehouses depend on software, retailers depend on payments, fleets depend on routing, fuel distribution depends on logistics and consumers depend on accurate information. A sufficiently messy systems failure can interrupt the chain while enormous amounts of food still physically exist somewhere else.

That is when shelves become a psychological clock. One viral post claims deliveries have stopped. Thousands of people buy “just in case.” A real payment outage follows. Staff cannot verify stock data. Roads around supermarkets jam. Within hours, an information problem has become a physical shortage. A measured household reserve removes some pressure to join that first wave.

How much is enough?

The first meaningful target is several days of normal eating without relying on a shop, delivery app or working cooker. Three days is a practical opening buffer and aligns with common UK emergency-planning advice. Seven days provides more breathing room for a prolonged outage. Beyond that, storage space, rotation and diet quality become increasingly important; buying thirty days of food you never use can create waste rather than resilience.

Use the calculator to set a count, then physically map meals to it. Write down breakfast, lunch and dinner options for the target duration. Check that there is a no-cook route if the power fails and that required water is included in your water plan. A food reserve that depends on ten litres of cooking water is not independent of the water reserve.