A 72-hour bag needs water, food, a way to treat injuries, a way to signal for help, and copies of your important documents. That’s the core. Everything else is a bonus that only matters once those basics are covered. Most bags fail not because they’re missing gear, but because they’re stuffed with extra items that add weight without adding survival value.
This guide walks through what to pack, how much your bag should weigh, and the overpacking mistakes that turn a 72-hour bag into something nobody can actually carry.
Before You Pack: Safety Comes First
If you’re told to evacuate right now, leave. Don’t stop to finish packing a “perfect” bag. A partially stocked bag you grab in two minutes is more useful than a complete one you’re still assembling when it’s time to go. Build your bag ahead of time, during a calm moment, so you never have to make that choice.
The Core Checklist
This list follows the basic supply recommendations published by Ready.gov and the American Red Cross. Neither source lists a single fixed item count — treat this as a starting framework, then adjust for your household.
- Water — one gallon per person, per day, for drinking and basic sanitation.
- Food — at least a three-day supply of non-perishable food that needs no cooking, refrigeration, or much water to prepare.
- First aid kit — for cuts, blisters, and minor injuries.
- Flashlight and extra batteries, or a hand-crank light that doesn’t need batteries.
- Battery-powered or hand-crank radio with NOAA weather alert capability, so you can get official updates if cell service is down.
- Whistle — to signal for help without shouting yourself hoarse.
- Dust mask — to filter contaminated air.
- Plastic sheeting, scissors, and duct tape — to shelter in place if needed.
- Moist towelettes, garbage bags, and plastic ties — for personal sanitation.
- Manual can opener — if any of your food is canned.
- Multi-purpose tool or wrench/pliers — to shut off utilities if needed.
- Local maps — a paper backup in case your phone dies or GPS fails.
- Cell phone with chargers and a backup battery.
- Copies of important documents — ID, insurance policies, and bank records, stored in a waterproof container or saved electronically.
- Cash — small bills. ATMs and card readers may not work without power.
- Medications — the Red Cross recommends a 7-day supply of prescription and essential over-the-counter medications, along with a written list of what you take and the dosages, so a first responder can help you if you’re unable to speak for yourself.
Both sources also note that households should plan for supplies unique to their situation — infants, older adults, people with disabilities, and pets all have needs a generic checklist won’t cover.
How Much Should Your Bag Weigh?
There’s no single official weight limit for a 72-hour bag, but the practical rule most packing guides converge on is simple: if you can’t comfortably carry it for a mile, it’s too heavy. A bag that pulls you off balance or exhausts you in the first ten minutes works against you in an actual evacuation.
A few ways to keep the weight in check:
- Weigh your packed bag on a bathroom scale before you’re relying on it. Don’t find out it’s too heavy during an emergency.
- Pack water in a way you can refill or supplement rather than trying to carry a full three-day supply for every household member in one bag. A filtration or purification method weighs far less than the water itself.
- Choose one multi-purpose tool instead of several single-purpose ones.
- Test-carry the bag around your house or yard. If it’s uncomfortable after five minutes, it will be worse after an hour.
Common Overpacking Mistakes
These are the patterns that turn a workable bag into dead weight:
- Too much canned food. Canned goods are heavy and often need water to prepare or wash down, which adds to what you have to carry.
- Duplicate tools. A hatchet, a full knife set, and a multi-tool all do overlapping jobs. Pick one that covers the most functions.
- Full-size toiletries. Travel sizes exist for a reason. You don’t need a full bottle of anything for three days.
- Cotton clothing and heavy bedding. Cotton stays wet and offers little warmth once damp. A compact emergency blanket does more for less weight than a bulky sleeping bag.
- Gadgets over basics. Solar chargers and multi-function devices are nice to have, but not at the expense of water, food, or first aid supplies. Pack the basics first, then add extras if there’s room and weight budget left.
- Packing for scenarios instead of needs. A bag built around one imagined disaster (say, a specific type of attack) often skips the basics that matter in the emergencies you’re actually far more likely to face — storms, power outages, and evacuations.
A Simple Way to Decide What Stays
For every item you’re considering, ask three questions:
- Does this address water, food, first aid, shelter, or documents? If yes, it’s core — keep it.
- Could I do without this for three days and still be okay? If yes, it’s optional.
- Is there a lighter or multi-purpose version of this? If yes, swap it in.
If an item doesn’t pass the first question and doesn’t add meaningful value against the second and third, leave it out.
Building the Rest of Your Emergency Plan
A 72-hour bag is one piece of a household emergency plan, not the whole plan. Water and food storage for sheltering in place is a separate consideration from what you carry in a bag — our Emergency Food & Water coverage looks at that in more depth. If you’re also thinking through backup power, first aid stock at home, or a family communication plan, our Home Preparedness category covers those scenarios. And if you’re comparing pre-built kits against building your own from scratch, see our broader Bug Out Bag coverage for what to look for either way.
Frequently Asked Questions
Does every person in the household need their own bag?
Ready.gov and the Red Cross both recommend building supplies around your household’s specific needs. In practice, that usually means each adult and older child carries their own bag, while supplies for infants, younger kids, or pets get distributed across the adults’ bags.
How often should I check or update my bag?
Ready.gov recommends re-thinking your needs every year and updating your kit as your family’s needs change, and to replace expired items as needed. A twice-a-year check tied to something easy to remember, like daylight saving time changes, works well for most households.
What’s the difference between a 72-hour bag and a home emergency kit?
A 72-hour bag is built to be carried and used away from home during an evacuation. A home emergency kit is meant for sheltering in place and can include bulkier supplies, like a larger water store, that you wouldn’t want to carry on foot.
Do I need special medical supplies in my bag?
If you or a family member takes prescription medication, the Red Cross recommends keeping about a 7-day supply along with a written list of medications and dosages. Don’t start, stop, or change any medication based on emergency planning advice — talk to your prescribing clinician about how to handle your specific medications during a disaster.
Educational Disclaimer
This article is for general preparedness education. It is not medical, legal, or emergency management advice. Guidance here reflects publicly available recommendations from Ready.gov and the American Red Cross as of this writing; always check those sources directly for the most current information, and follow instructions from local emergency officials during an actual disaster. For questions about medications or existing health conditions, talk to a qualified clinician. See our Medical Disclaimer for more detail.
This article is for general information purposes only and does not constitute medical advice. Consult your doctor or qualified healthcare provider before making changes to your health routine.