Emergency Water & Food Supply Calculator | How Much to Store for Your Family
Emergency Water & Food Supply Calculator
Estimate how much water and food your household needs for an emergency supply.
“This emergency water calculator helps you estimate how much to store for your household.”
How Much Water Do You Need?
A good emergency starting point is 1 gallon of water per person per day for drinking and sanitation.
For a 3-day emergency, a family of 4 should store at least 12 gallons, and for a 14-day goal, that same family should plan for 56 gallons.
Hot weather, heavy activity, pets, and special needs can increase that amount.
How Much Food to Store?
Start with at least 3 days of non-perishable food, then build toward 7, 14, or 30 days depending on your household needs.
Focus on foods your family already eats, because familiar food is easier to rotate and less likely to go to waste.
Good options include rice, oats, beans, canned meat, peanut butter, crackers, and shelf-stable fruits and vegetables.
Storage Tips & Recommendations
Store food in a cool, dry, dark place whenever possible.
Keep water in food-grade containers, rotate it on a regular schedule, and label everything with a date.
Revisit your supplies once a year so your kit stays current as your family changes.
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