How much water should I store?
A drinking and cooking baseline, confirmed extra water, container capacity, and filled weight.
Water storagePractical household preparedness
Know what to protect when the power goes out. Make a plan for your household’s water, food, and essential systems, one decision at a time.
Free planning tools No account needed
These are planning estimates, not exact equipment sizing or emergency instructions. Use them as a starting point, then check the assumptions, safety limits, and local guidance.
A drinking and cooking baseline, confirmed extra water, container capacity, and filled weight.
Water storageA refrigerator/freezer timeline that hands off from elapsed time to temperature evidence.
Outage food safetyRuntime from constant watts or measured 24-hour energy, with a separate running-output check.
Battery runtimeContinue on this device without creating an account.
Start with your situation
Focus on the disruption you’re planning for. Find the checks, decisions, and household actions that matter.
Explore all situationsPrioritize essential loads, lighting, communication, food safety, and safe backup power.
Plan for power outagePrepare heat, water, food, travel decisions, and outage fallbacks before conditions worsen.
Plan for winter stormReduce home exposure, keep official alerts available, and make early evacuation decisions.
Plan for wildfireWork through alerts, home protection, water, outage planning, and evacuation timing.
Plan for hurricanePlan by household system
Minimums, storage, and treatment limits
Plan waterFamiliar meals, cooking, and rotation
Plan foodEssential loads, runtime, and safe backup
Plan powerAlerts, contacts, and offline fallback
Plan communicationsHousehold needs, weight, and practice
Plan emergency kitAlarms, lighting, access, and shutoffs
Plan home safetyPlan for conditions where you live
These are planning prompts, not local alerts. Follow your local emergency-management and weather services for current instructions.
If wildfire or smoke affects your area, review evacuation routes, alerts, and indoor-air plans.
Review wildfire planningIf tropical weather affects your area, review official alerts, evacuation guidance, and outage supplies.
Review hurricane planningContinue learning
Estimate battery-backup runtime from measured loads, usable capacity, reserve, conversion loss, output limits, motor surge, temperature, age, and a real test.
Plan safe manual fallbacks for locks, garage access, cameras, alarms, lighting, communications, and household check-ins during a power outage.
A family of four needs 12 gallons for 3 days or 56 gallons for 2 weeks before added needs. Plan container counts, weight, reserves, and refills.