Emergency pantry calculator: food and water by people and days

How much food and water you need for a blackout: enter adults, children, babies, pets and days, and print your made-to-measure list.

Pantry with tinned food
Photo: Jacob McGowin / Unsplash
Total water0 L
8 L containers0
Approximate food0 kg
See one-click kits

Approximate calculation: about 2,000 kcal per adult per day (children count as 0.7). Water: 3 L per person per day for drinking and cooking, plus 2 L for hygiene if you tick it. Buy what you already eat and check expiry dates twice a year.

Tips for building your pantry

  • Buy little by little. Add a couple of things to each weekly shop and in a month it’s done without your wallet noticing.
  • Rotate. New items at the back; whatever expires first at the front. Replace whatever you use.
  • Ring-pull. Prioritise ring-pull tins: if you lose the tin opener, you won’t go hungry.
  • No cooking. At least half should be edible cold: cooked pulses, tuna, crispbread, nuts.
  • Water in small containers. 5–8 litre ones can be carried up the stairs even if the lift isn’t working.

More detail in Food, cooking and water for a blackout and in the pantry PDF (in Spanish).

Keep it on paper for when there's no power or internet.