Calculators Water planning

How much water should I store?

Set an essential-use baseline, then check extra needs and storage space.

About 2 minutes You’ll need: people, pets, days, and optional reserves

Water storage calculator for emergency household water planning

Saves on this devicePrivacy & options

Calculations run in this browser; inputs stay out of analytics. A draft saves here after your first change unless you turn saving off. You choose separately whether to save a result to My Household Plan or copy a permitted share link.

Household and duration

People who rely on this supply.

Count pets whose water you will plan separately below.

1-90 days.

Confirmed extra water

Enter amounts your household has confirmed. The reminder choices do not change the calculation.

Per pet, per day. Use known consumption or veterinary guidance; 0 adds nothing.

One household total per day for confirmed heat, medical, work, hygiene, or refill needs.

Container plan

Leave every count at 0 for a suggested 5-gallon and 1-gallon mix, or enter containers you can actually place and move.

Count cases whose total volume you know.

Editable volume per case; check the bottle labels. The starter 3.17 gal approximates twenty-four 500 mL bottles.

Store an amount you can safely manage

Treat the estimate as an essential-use baseline. Container size, storage temperature, pets, health needs, and the hazard itself can change the practical total.

  1. Enter everyone who depends on the supply, include pets, and choose a realistic number of days.
  2. Choose food-grade containers that fit your space and remain light enough to move safely.
  3. Label, protect, inspect, and rotate the supply using current public-health and manufacturer guidance.

Common questions

What does the baseline water amount cover?

The CDC baseline supports essential uses such as drinking, cooking, and brushing teeth. It does not guarantee enough water for bathing, laundry, dishwashing, toilet flushing, or individual medical needs. Add confirmed extra needs separately.

Should I use bottled water or larger containers?

A mix is often easier to store and move. Use sealed commercial water for convenience and food-grade containers for larger reserves, following the container maker and public-health guidance.

What if stored water looks or smells questionable?

Do not assume appearance alone proves safety. Follow current local public-health instructions for boil notices, treatment, or disposal, and use an unopened safe source when available.

Plan first. Buy what is missing.

Research a container for your water plan

A five-gallon can is one option to investigate. Confirm filled weight, lifting, storage and cleaning needs. This example is not selected from your calculator answers.