Stormbook

Kit math

How much does your household need?

Tell us who is in the house. We work out the water, food and medicine, and list the basic kit from Ready.gov and the American Red Cross. Nothing you type here is saved.

Which kit?

2 people, 14 days

Water
28 gal

about 234 lb

Food
28 person-days

non-perishable

Medicines
7 days

each person who takes them

The kit
ItemHow much
Water28 gallons (1 gallon per person per day, for drinking and sanitation)
Non-perishable food28 person-days (2 × 14 days)
Medicines (7-day supply) and copies of prescriptions7 days for each person who takes medicine
Battery-powered or hand-crank radio and a NOAA Weather Radio with tone alert
Flashlight
First aid kit
Extra batteries
Whistle (to signal for help)
Dust mask2 (one per person)
Plastic sheeting, scissors and duct tape
Moist towelettes, garbage bags and plastic ties
Wrench or pliers (to turn off utilities)
Manual can opener
Local maps
Cell phone chargers and a backup battery
Copies of personal documents
Cash

Sources: Ready.gov, Build a Kit and Water (one gallon per person per day, for drinking and sanitation); American Red Cross, Be Red Cross Ready (3-day supply to evacuate, 2-week supply at home, 7-day supply of medicines). A gallon of water weighs about 8.34 lb. Checked 10 October 2026. Infants, nursing mothers, sick people and hot weather need more water.

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