72-Hour Survival Kit: What FEMA and Ready.gov Actually Recommend

Published: August 1, 2026 · By Anne Johnson

What "72-Hour" Actually Means

A 72-hour survival kit is built around one assumption: for the first three days of a major disaster, you may not have access to running water, electricity, open stores, or emergency responders. That window comes from FEMA's own planning guidance, which is built around the reality that first responders are typically overwhelmed in the early hours of a large-scale event and households need to be self-sufficient until systems catch up.

It is not a bug-out bag for wilderness survival, and it is not a long-term prepper stockpile. It is a grab-and-go kit sized for a specific, well-documented gap: the time between when a disaster hits and when normal help arrives.

What Ready.gov and FEMA Actually Recommend

The federal government's official guidance comes from Ready.gov's Build a Kit checklist. The core list is shorter than most commercial "survival kits" suggest:

• Water — one gallon per person, per day, for drinking and sanitation
• Food — at least a three-day supply of non-perishable food
• A battery-powered or hand-crank radio, ideally a NOAA Weather Radio with tone alert
• Flashlight and extra batteries
• First aid kit
• Whistle to signal for help
• Dust mask to help filter contaminated air
• Plastic sheeting, scissors, and duct tape to shelter in place
• Moist towelettes, garbage bags, and plastic ties for personal sanitation
• Wrench or pliers to turn off utilities
• Manual can opener
• Local maps
• Cell phone with chargers and a backup battery

Ready.gov also lists a longer set of "additional supplies" worth layering in depending on your household: prescription medications, infant or pet supplies, a change of clothes and sturdy shoes, cash, copies of important documents, and a sleeping bag or blanket per person.

Where Most DIY Kits Fall Short

Three gaps show up over and over in kits people assemble themselves:

Water gets underestimated. One gallon per person per day for three days is 3 gallons — roughly 25 pounds — per person, before food or anything else. Most improvised kits pack a few bottles and call it done.

The first aid kit is an afterthought. A stray box of bandages is not the same as a first aid kit built for trauma, not just cuts and scrapes.

Nothing gets checked or rotated. Food expires, batteries corrode, and medications go out of date. Ready.gov specifically recommends replacing expired items and re-evaluating the kit every year — a step that's easy to skip once a kit is packed and put in a closet.

Building a Kit That Actually Covers 72 Hours

Ready.gov also recommends keeping supplies in more than one place — home, work, and vehicle — since you don't control where you'll be when an emergency hits. Our 1-Person 72-Hour Essentials Kit is built around that same three-day window, packaged as a single grab-and-go unit rather than something you have to assemble item by item.

FAQ

Is a 72-hour kit the same as a bug-out bag?

Not exactly. A 72-hour kit is meant to help you shelter in place or evacuate short-term, following the FEMA/Ready.gov household preparedness model. A bug-out bag is typically built for longer, more mobile scenarios and often carries more specialized gear.

How much water do I actually need?

Ready.gov's baseline is one gallon per person, per day, for drinking and sanitation combined — three gallons per person for a 72-hour kit.

How often should I check my kit?

At least once a year. Check expiration dates on food, water, and medications, and confirm batteries and electronics still work.