Tool

Water calculator

Ready.gov's rule is 1 gallon of water per person per day, for drinking and sanitation. Enter your household and how many days you want to cover.

Store at least

12 gallons

45 litres · 31 1.5 L bottles

That is 1 gallon (3.8 L) per person per day.

Before you fill the jugs

  • Store at least a 3-day supply; two weeks is better if you have the space.
  • Children, nursing mothers and people who are sick may need more, and hot weather can double the need.
  • Buy commercially bottled water and keep it in its sealed container, or follow the storage steps for your own containers.
  • Pets need water too: count them in.

Sources

  1. Ready.gov: Water