Preparing with Dan
Emergency Supply Calculator
Build a tailored supply checklist for your household in under 30 seconds. Adjust the numbers, pick your scenario and climate, and print a ready-to-pack list.
Your Household
Your Personalised Plan
Water
Baseline: ~1 gallon per person per day for drinking, cooking and basic sanitation. Hot or arid climates increase need.
Food
Focus on non-perishable, low-prep foods: canned proteins, peanut butter, rice, oats, energy bars, dried fruit, comfort items.
First Aid
Hygiene & Sanitation
Power & Lighting
Scenario-Specific Items
Climate Add-Ons
What to buy for each line
Your list says how much. These guides say which one, and what the listings do not tell you — no prices, no scores, and the reason not to buy is written next to every product.
- WaterWater storage containers— Storage containers and how much actually fits in a flat
- WaterGravity filters— Filters and chemical treatment, and which one to use when
- FoodMeat-free food supply— Buckets, staples and what a day of calories really looks like
- FoodRation bars— The bar everyone buys, and why one pack is not three days
- FoodFood for apartments— Calories per cubic foot when you have one closet
- First aidFirst aid kits— The Red Cross list is 60 items, not 500
- Power & lightingLED lanterns— Runtime matters more than lumens
- Power & lightingEmergency radios— Hand-crank radios, and the SAME feature worth paying for
- SafetySmoke & CO alarms— Ten years is the number on the back of the alarm
We earn a commission on some links in those guides, at no cost to you. It does not change what we recommend.
Get the free printable checklists
Don’t stop at supplies. Print the family emergency contact card, the costed 72-hour kit checklist and the first-hour winter outage sheet: one page each, free, no email required.
Built for PreparingWithDan.com · This calculator provides general guidance, not professional emergency advice.
Link to this calculator
Schools, community groups and bloggers are welcome to link to or recommend this tool. Copy and paste:
<p>Free emergency supply calculator (water, food and essentials for your household and number of days): <a href="https://preparingwithdan.com/free-emergency-preparedness-tool/">preparingwithdan.com/free-emergency-preparedness-tool</a></p>
Companion downloads: free printable checklists · the numbers it is built on: emergency preparedness statistics.