How Long Should Your Emergency Supplies Last? 7 Countries Give 7 Answers

Every government that publishes a household emergency list is answering the same question: how long before help reaches you? Ask seven of them and you get seven different answers — from three days to ten. The spread itself is the lesson, and it's worth knowing before you build your own kit.

The part everyone agrees on

Start with the reassuring part. Whatever country you look at, the core list is nearly identical: water, non-perishable food, a torch, a battery or wind-up radio, a charged power bank, a first-aid kit, essential medications, cash, paper copies of important documents and phone numbers, hygiene supplies, and food and supplies for babies and pets. If your kit has those eleven things, you have the skeleton every official list shares. Where the lists diverge is how long that skeleton is supposed to last — and what each country adds around it.

The big split: three days, a week, or ten days

Here is what each country's official program actually says, in its own terms:

Two things in that table deserve a second look. First, America's Ready.gov is the odd one out: its main kit page says "several days" and never fixes a number. The three-day figure often attributed to it comes from a separate kids' page, not the main list — so if you ever see Ready.gov described as a "three-day program," that's a summary, not what the page says. Second, the water litres are not directly comparable, because each country counts different things inside its number. The UK's three litres are drinking only, with cooking and washing on top. Canada's two litres are meant to cover drinking, cooking and hygiene together. (And a note for anyone who finds an older Canadian list: it used to say two litres plus two more for cooking and cleaning. The current page folds it all into two. Don't merge the two versions.)

Germany is the outlier at the long end, and it is explicit about the ladder: ten days is the goal, three days is a useful start, and you build up step by step. Sweden's brochure puts it as a civic duty as much as a practical one: "most of us must be able to manage on our own for at least a week." Japan splits the difference deliberately — three days first, a week and beyond as the plan.

Food: no-cook, or cook-if-you-can

The food advice splits along a similar line. The UK and New Zealand both say: food that needs no cooking and no refrigeration — tinned meat, fish and vegetables, dried fruit and nuts. The UK adds a principle worth stealing: buy food you'd usually eat. The US says a several-day supply of non-perishable food plus a manual can opener, and leaves it there. Canada says non-perishable food, replaced once a year, with a small fuel stove only as an extra item — and a warning never to use it indoors.

Germany wants food that is durable, mostly eaten cold, ready to eat, or quick to cook, so your camping-stove fuel lasts — and it wants your normal foods, with allergies, children and pets catered for. Sweden gets the most specific about what to eat: filling, energy-rich food stored at room temperature, prepared quickly with very little water or eaten immediately, with whole categories for high-fat foods (cooking oil, peanut butter, nuts) and energy boosts (jam, chocolate, honey, dried fruit). Japan's method is the most practical of all: rolling stockpiling. Keep a little extra of the food and daily necessities you normally use — alpha rice, cup noodles, canned food, retort pouches, vegetable juice, chocolate — and use them in purchase order, so the stockpile never goes stale and never feels like a separate chore. Germany shares the same idea. It is the single best answer to the "but my supplies will expire" objection.

The interesting differences

The universal core is boring by design. The country-specific extras are where each place's hazards and history show through:

• Germany has the longest, most detailed list: a heating source independent of the mains (gas heater, paraffin stove, ethanol fire) and its fuel, a safety helmet for flying debris, smoke and carbon-monoxide detectors, a fire extinguisher, a camping toilet with bin liners, and a children's SOS capsule — a neck pouch with the child's name, date of birth and address. Personal medication is specified for at least ten days. And Germany splits the kit most explicitly: a ten-day home stockpile and a separate backpack per person, with two days' food, for the first days out of the house.
• Sweden quantifies the things other countries leave vague: around 1,000 SEK in cash per adult, in different denominations, and a full month's supply of prescription medicines — the longest medication horizon in this set. It also gives the most detailed no-flush toilet method (a bag in the bowl or bucket, covered with compost litter or sawdust, with a lidded bucket), a one-room heating method (gather in one room, drape blankets over windows, cover the floor with rugs), and a map and compass for evacuation. Its official emergency channel is named: Sveriges Radio P4.
• Japan puts a portable toilet at the top of every list — home stockpile, office stockpile and evacuation bag alike — along with pocket heat packs, plastic wrap as a listed supply, and a foldable helmet and disaster whistle in the evacuation-centre bag. Its default assumption is also stated plainly: "If your home is safe, you are expected to remain and live at home." The bag is for when home isn't safe, not the plan itself.
• The US is the only one to name a NOAA Weather Radio with tone alert, and the only one to list plastic sheeting, scissors and duct tape for sheltering in place, plus a wrench or pliers to shut off utilities, a whistle to signal for help, and a dust mask.
• Canada puts extra keys for the car and house in its basic list — the kind of detail you only appreciate when you've locked yourself out during an evacuation — specifies cash in smaller bills and coins, and ties the kit review to the spring and fall time changes.
• New Zealand puts work gloves and a properly fitted P2 or N95 mask in its headline home list, no other country in this set does that, and specifies large plastic buckets for an emergency toilet. Its car kit gets a winter paragraph of its own: brush, shovel, tire chains, windshield scrapers.
• The UK adds the Priority Services Register — signing up so your electricity, gas and water providers know you need extra support — a written list of regular medication names and doses, and ready-to-feed (not powdered) baby formula, precisely because you may not be able to boil water safely. It also notes, sensibly, that torches are safer than candles.

Every program except the UK's headline checklist also names a separate portable bag. New Zealand's framing is the most honest about how real kits live: the home supplies "don't have to have them all in one place, but you might have to find them in a hurry and/or in the dark."

What this means on the Jersey Shore

The three-day figures come with an assumption: that help reaches you within three days. A nor'easter that floods the causeways, drops trees across the only road out, and knocks out power to a barrier-island town can break that assumption. The longer horizons — Sweden's week, Japan's "a week and beyond," Germany's ten days — are built for places that have decided help might take longer, and that is the more honest planning basis for a shore house.

A practical way to use all seven lists: build to a week, even if the number you remember is three days. Do the water math first, because water is the heavy part. At three litres of drinking water per person per day, a family of four goes through 12 litres a day — 84 litres for a week, before cooking and washing. Store food you'd actually eat, the way Japan and Germany advise, and rotate it the way Canada and the UK advise: check the kit every six months, replace food once a year. And borrow the country-specific extras that fit your house: a wrench to shut off utilities (US), extra keys (Canada), a written medication list (UK), a month of prescriptions if you can get them (Sweden), and a plan for the toilet that doesn't assume the plumbing works (Sweden, New Zealand, Japan, Germany — four countries agree on this one, which tells you how often it's the thing people forget).

The governments disagree on the number. They agree on the kit. Build the kit, then build past the number.

The short version

• Every official list shares the same core: water, food, light, radio, first aid, medicines, cash, and paper copies of documents.
• Durations run from 3 days (UK, Canada, New Zealand) to 10 days (Germany), with the US saying only "several days."
• Water figures aren't comparable at face value — each country counts different uses inside its number.
• Build to a week, store food you'd actually eat, rotate it yearly, and borrow the extras that fit your house.

Sources

• UK, Be Ready checklist: beready.campaign.gov.uk/be-ready-for-emergencies/
• US, Ready.gov Build A Kit: ready.gov/kit
• Canada, GetPrepared emergency kit: canada.ca — GetPrepared emergency kit
• New Zealand, Get Ready supplies: getready.govt.nz/prepared/household/supplies
• Germany, BBK stockpiling: bbk.bund.de — Stockpiling
• Sweden, home preparedness for at least a week: mcf.se — Home preparedness
• Japan, Tokyo Stockpiling Navi: bichiku.metro.tokyo.lg.jp/en/why/

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