Emergency calculators
Type in your household and get the number. Every figure comes from the CDC, EPA or USDA, linked on each page.
- W-02How much water to store for an emergency1 gallon per person per day. Work out your household total in 10 seconds.
- F-03Emergency food calculator: how much food does your family need?Calories a day for everyone in your home, how much to store, and how long your food will last.
- W-04How much bleach to purify water: calculatorExact drops of bleach for any amount of water, using the EPA's emergency table.