Bug-out bag vs home emergency kit: what’s the difference?

A home emergency kit lets you stay safely at home for at least 72 hours without power, water or shops. A bug-out bag (also called a grab bag or go bag) is a light backpack you can pick up in two minutes if you are told to evacuate. Most households need both: the home kit for the likelier blackout or storm, the bag for fire, flood or a gas leak.

By Richard Wildmark Sousa, EditorPublished 31 October 20266 min read

In short

In most emergencies authorities ask people to stay at home: the home kit comes first.

The bag is for leaving fast: documents, medicines, water, light, charger, a change of clothes.

Keep the bag light enough to carry for an hour; one per adult.

Many items overlap: build the bag first and keep it next to the home kit.

Quick answer

The bagEmergency backpackPre-packed or empty to fill.

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In both kitsWaterproof document pouchCopies of IDs, cash, contacts.

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Two kits for two different emergencies

Most emergencies in Europe and North America, such as blackouts, storms, heatwaves, cold snaps and water cuts, are ones where authorities ask you to stay at home. That is what the 72-hour target from the European Commission and agencies like Germany’s BBK and the UK’s Be Ready campaign is about. A smaller number of emergencies, such as wildfires, floods, gas leaks, chemical accidents and building damage, require you to leave quickly. That is the job of the bag.

	Home emergency kit	Bug-out bag (grab bag)
Purpose	Shelter in place for 72 hours or more	Leave home within minutes
Typical events	Blackout, storm, cold, heat, water cut	Wildfire, flood, gas leak, evacuation order
Water	9 L (2.4 US gal) per person for 72 h	1–2 L (34–68 fl oz) per person plus a filter or tablets
Food	Ordinary shelf-stable food, 3 days	Snacks and bars for a day
Size	Crate or cupboard	Backpack per adult
Where	Kitchen, storeroom, under the bed	By the front door, and a version in the car

What goes in both

Documents and cash: copies of IDs, prescriptions and insurance in a waterproof pouch, plus some small notes. See emergency cash and documents.
Medicines: at least three days of everyday medicines and a copy of prescriptions.
Light: a head torch with spare batteries.
Power: a charged power bank and cable.
Information: a small radio (at home, a bigger one is fine).
Warmth: a foil blanket and whistle.
First aid: a full kit at home, a compact one in the bag.

Only in the bug-out bag

A change of clothes, warm layer, rain poncho and comfortable shoes.
Water for a day on the move and a filter straw or tablets.
Toothbrush, wipes, sanitary products, glasses or contact lenses.
Phone numbers on paper, and the address of a meeting point.
For children: a comfort toy and a card with your phone number.

Our grab-and-go bag checklist lists every item.

Only in the home kit

The full water reserve and three days of food (see the food list).
Lanterns, a camping stove used outdoors, sleeping bags or blankets.
An emergency toilet and hygiene supplies: see emergency toilet and hygiene.
Bigger power: a large power bank or a portable power station.

How to build both without paying twice

Build the bag first. It is smaller and covers the most urgent scenario.
Put the home kit next to it, in a crate. If you stay home, the bag’s contents become part of the home kit.
Add the bulky items (water, food, lantern, stove) to the crate over a few weeks.
Check both twice a year: see how often to check your emergency kit.

Product	Best for	Key spec	Buy
Emergency backpack	The bag itself	Padded straps, rain cover	Check price on Amazon
Waterproof document pouch	Both kits	Zip seal	Check price on Amazon
Compact first aid kit	The bag	Small and light	Check price on Amazon
Water filter straw	Water on the move	Light, no chemicals	Check price on Amazon

We don’t list prices because they change often. Use the button to see the current price on Amazon.

Questions people ask

What is the difference between a bug-out bag and an emergency kit?

An emergency kit (home kit) supports you at home for 72 hours or more: water, food, light, radio, heat, hygiene. A bug-out bag is a portable subset for evacuation: what you need for a day or two away, plus documents and medicines.

Do I need both a bug-out bag and a home kit?

Ideally yes. France’s official guide notes that the 72-hour kit is also useful if you must leave in a hurry, and Catalonia’s 2025 campaign recommends a second bag for evacuations. Start with the bag if your area has wildfire or flood risk.

How heavy should a bug-out bag be?

Light enough that the person carrying it can walk for an hour with it. For most adults that means roughly 8–12 kg (18–26 lb) at most; children should carry only a small bag with their own items.

Where should I keep my bug-out bag?

Near the main exit, in a hall cupboard, so anyone in the household can grab it. Keep a smaller version in the car if you drive.

What goes in a bug-out bag that is not in a home kit?

Copies of documents, cash, a list of contacts, a change of clothes, comfortable shoes, rain gear, a compact first aid kit and enough water and snacks for a day on the move.