Emergency kit in Japan: what the government recommends

Reviewed on November 15, 2026

Time frame	3 days to 1 week
Water per person	3 L/day
What stands out	For a family of 4: a portable toilet for 45 uses, 2 stoves with 8 canisters and a hand-crank radio. After a major earthquake it plans for 4 days without power and 21 without water. November 19 is the day to check your supplies.
Official source	Tokyo Metropolitan Government ("Let's Build Daily Stockpiles")

What every country asks for

Water: 2 to 4 liters per person per day; the most common figure is 3 liters (drinking and cooking).
Food: Non-perishable, and edible without cooking or with little heating. Ideally what you already eat, rotated.
Light: A flashlight (ideally a headlamp) and spare batteries. Candles only with care: several countries advise against them.
Radio: Battery or hand-crank: in every country it's how warnings get through when the internet goes down.
First aid and medication: A basic first aid kit and regular medication for the time frame; Canada and Sweden ask for more margin (weeks).
Cash: In small bills: without power, card terminals and ATMs don't work.
Documents: Copies of your documents and important phone numbers on paper, in a waterproof pouch.
Power bank: Charged, with its cable, to keep your phone going.

Figure checked against the official source on November 15, 2026. Always follow the instructions of your country's authorities.