Free tool
Emergency Water Storage Calculator
Get gallons, liters, approximate weight, and the simplest container approach before comparing products.
Calculate your water target
Result
Total: calculating...
How this is calculated
[(People × Days × Human Daily Baseline) + (Pets × Days × Pet Daily Estimate)] × Buffer Multiplier
Sources and assumptions
- Ready.gov water guidance - one gallon per person per day baseline. Date checked: June 20, 2026.
- Ready.gov pet preparedness - pets need their own food and water planning. Date checked: June 20, 2026.
- CDC emergency water guidance - safe-water context during emergencies. Date checked: June 20, 2026.
Pet needs vary by species, size, diet, weather, health, and activity. Water weighs about 8.34 pounds per gallon; store heavy containers low on surfaces that can support them.