Emergency water calculator
Start with the official household baseline, then build a more practical storage target for the people and pets you are actually planning for.
People-only official baseline
14 gallons
Planning target with your selected pet estimate and buffer
14 gallons
The people-only baseline uses one gallon per person per day. Pet needs vary by animal, size, diet, climate, and health; the pet amount here is only a planning allowance, not veterinary guidance. Increase your target for heat, illness, pregnancy, medical needs, cooking, or other household circumstances.
What this number means
The baseline is a starting point, not a promise that the amount will cover every emergency. Space, climate, sanitation, medical needs and the expected length of disruption can change what is practical for your household.