The 72-hour emergency kit is the foundation of household preparedness. Governments, emergency management agencies, and disaster relief organisations worldwide converge on the same number: 72 hours (3 days) is the standard self-sufficiency target after a major emergency.
Understanding why this number matters — and how to build a kit that genuinely meets it — transforms preparedness from an abstract concept into a practical capability.
Why 72 Hours?
After a major disaster, emergency services are simultaneously overwhelmed across a wide area:
- Roads may be blocked or damaged, delaying responders
- Communication systems may be overloaded or offline
- Emergency services prioritise mass casualty incidents over individual household needs
- Hospitals face surge conditions
- Supply chains take time to restore
FEMA, the American Red Cross, the UK government, and Australia's emergency management agencies all use 72 hours as the benchmark: can your household survive without any outside assistance for three full days?
In practice, many major events require self-sufficiency for much longer — extended power outages can last 1–2 weeks, and some natural disasters isolate communities for weeks. But 72 hours is the minimum, and it is the standard that most households fall short of.
⚠️ A kit you cannot find, cannot access, or that has expired contents provides a false sense of security. A functioning 72-hour kit requires annual maintenance and physical familiarity from all household members.
Shelter-in-Place vs Evacuation Kit
The 72-hour kit exists in two forms. Understand the difference:
| Feature | Shelter-in-Place Kit | Evacuation Kit (Go-Bag) |
|---|
| Location | Home — a dedicated cupboard or room | A bag near the exit — ready to grab |
| Volume | Unlimited — can include large containers | Limited to what you can carry |
| Water | 10–15 litres per person stored at home | 1–3 litres per person (rest sourced en route) |
| Food | 3–7 day supply, includes cooking equipment | 72 hours, no-cook where possible |
| Tools | Full toolkit, generator, camp stove | Multi-tool, lighter, compact essentials |
| Documents | Originals stored in fireproof safe | Copies in waterproof pouch |
| Purpose | You stay home; grid is down or access is limited | You must leave immediately |
An ideal household has both: a home-based shelter-in-place kit, and a portable go-bag ready to leave at 3 minutes' notice.
The Itemised 72-Hour Kit List
Water
- Minimum: 3 litres per person per day × 3 days = 9 litres per person
- For a family of four, that is 36 litres stored at home
- Store in food-grade sealed containers or commercially bottled water
- Include water purification tablets as a backup
- Include a portable water filter
- Label with fill/purchased date; replace every 6–12 months
Food
- Minimum: 1,800–2,000 kcal per person per day for 3 days
- Choose foods that require no refrigeration, minimal preparation, and are familiar
- Recommended selections:
- Canned goods with pull-tabs (beans, fish, vegetables, fruit)
- Peanut butter
- Crackers and hard biscuits
- Dried fruit and nuts
- Energy/nutrition bars
- Instant oats or porridge sachets
- Rice (if camp stove included)
- Comfort foods and familiar snacks for children
- Include a manual tin opener
Light and Power
- Hand-crank or battery torch — minimum 1 per person
- Spare batteries (alkaline; check dates annually)
- Candles and waterproof matches (use cautiously; avoid near gas)
- Solar or hand-crank lantern for area lighting
- Charged power bank (10,000+ mAh); recharge every 3 months
Communication
- Battery-powered or hand-crank AM/FM/NOAA radio
- Whistle (every household member)
- Paper and waterproof pen for notes and signalling
First Aid
- Adhesive bandages (multiple sizes)
- Sterile gauze (various sizes)
- Medical tape
- Elastic bandage (ACE wrap)
- Antiseptic wipes and antibiotic ointment
- Nitrile examination gloves (4+ pairs)
- Scissors and tweezers
- Pain relief (paracetamol and ibuprofen)
- Antihistamine
- Antidiarrhoeal medication
- Oral rehydration salts (4+ sachets)
- Thermometer
- First aid manual or reference card
- Multi-tool with knife, pliers, and screwdriver
- Work gloves (heavy-duty leather or synthetic)
- N95 or P2 dust masks (minimum 4 per person)
- Emergency foil blankets (one per person)
- Duct tape (full roll)
- Tarpaulin (3x3m minimum)
- Paracord (10 metres)
- Compass
- Local area maps (printed; roads and emergency facilities marked)
- Waterproof matches and lighters (2+)
- Camp stove and fuel for shelter-in-place kit
Sanitation
- Toilet paper (at least 4 rolls)
- Hand sanitiser (500ml+)
- Soap (bar or liquid)
- Heavy-duty garbage bags (for improvised toilet)
- Feminine hygiene products (as required)
- Baby wipes (multipurpose; clean without running water)
- Basic toiletries
Documents (Shelter-in-Place)
- Passports and identification (originals in fireproof storage; copies in the kit)
- Insurance documents
- Medical records and medication list
- Emergency contact list (printed)
- Bank and financial information
- Property documents
- Photographs of household members (for identification if separated)
Cash
- Minimum 3–5 days of living expenses in cash
- Mix of small and large denominations
- Local currency for your area
- Store in the kit — ATMs and card systems may be offline
Per-Person Allocation
A common error is building one shared household kit without clarifying who carries or uses what. Assign per-person quantities:
| Item | Per Person (3 days) |
|---|
| Water (drinking) | 9 litres |
| Food | 5,400–6,000 kcal total |
| N95 mask | 4 masks |
| Emergency blanket | 1 |
| Torch | 1 |
| Whistle | 1 |
| Personal medications | Full 3-day supply |
| Identification copy | 1 set |
Special Needs: Infants and Young Children
Standard kit items do not cover infant needs. Add per child:
- Infant formula (if not breastfeeding): 3-day supply
- Nappies: 12–16 per day for newborns; 6–8 for older infants
- Baby food pouches or pureed food (if over 6 months)
- Feeding bottles or cups
- Nappy rash barrier cream
- Favourite comfort toy (sealed in a bag)
- Baby wipes (bulk supply)
- Infant medication (paracetamol drops, temperature-appropriate clothing)
Key principle: Never compromise on infant supplies. An infant in distress is a significant additional household burden in a crisis. Over-supply infant items in the kit.
Special Needs: Elderly Household Members
- Full medication supply (7-day supply minimum — 3-day kit plus overflow)
- Written medication schedule (times, doses, conditions)
- Hearing aid batteries
- Glasses (spare pair if possible)
- Mobility aids (spare walking stick in kit)
- Medical alert information written and waterproofed
- Extra comfort items (familiar blanket, familiar snacks)
Special Needs: Pets
- Food and water supply (3 days)
- Portable bowls
- Vaccination and ownership records
- Leash and carrier
- Any medications
- Recent photo of pet with owner (proof of ownership; reunification after separation)
Kit Storage
Location requirements:
- Accessible to all household members (not behind locked areas that might be inaccessible in an emergency)
- On or above ground level if flooding is a risk in your area
- Away from extreme heat and cold (chemical reactions degrade food and medications)
- Known and practiced — everyone in the household should be able to find and use it in the dark
Multiple storage points: Consider keeping:
- A full kit at home
- A smaller 24-hour kit in your vehicle
- A personal day-kit at your workplace (especially if you commute far)
Maintenance Schedule
| Frequency | Action |
|---|
| Every 6 months | Replace all food and water; check all expiry dates |
| Every 6 months | Charge power bank; replace batteries in torches and radio |
| Every season | Adjust clothing in kit for temperature |
| Annually | Review all documents; update emergency contact list; check personal medications |
| After every use | Replenish consumed items immediately |
Set a calendar reminder now. The two recommended times to review: when clocks change (daylight saving transitions), or on a memorable date each 6 months.
Quick Reference
| Situation | Action |
|---|
| Building kit from scratch, limited budget | Start with water and food (72-hour supply); add other items over time |
| Apartment with limited storage | Use under-bed rolling containers; divide kit across multiple bags |
| Just had a baby | Add infant-specific items immediately; review kit volumes |
| Kit was partially used in a minor emergency | Replenish all used items within 48 hours |
| Moving to a new area | Update local maps, emergency contact numbers, and cash denomination for local currency |
| Natural disaster forecast in 48 hours | Check and top up kit now; do not wait |
| Elderly person lives alone | Ensure a neighbour or family member knows the kit exists and how to reach them |
| Kit location forgotten by household member | Practice a family drill — locate and open the kit together |