72-Hour Food Rationing Quick Guide

A 72-hour food supply is the baseline emergency recommendation. It represents the minimum buffer between you and the consequences of a regional disruption — long enough for most emergency relief systems to begin functioning, but short enough to be practical and portable.

⚠️ In water-limited emergencies, prioritise foods that require no water to prepare. Dehydrated and freeze-dried meals taste better but consume your water supply. Ready-to-eat options preserve both water and fuel.

Calorie Targets by Person Type

These are minimum targets for sedentary to light activity during an emergency. Exertion (evacuation on foot, manual work) increases needs by 20–50%.

Person Type	Minimum Calories/Day	Comfortable Target
Adult (sedentary)	1,800	2,000–2,200
Adult (active — manual evacuation, labour)	2,200	2,500–3,000
Child age 2–8	1,000–1,400	1,200–1,600
Child age 9–13	1,400–1,800	1,600–2,000
Teenager 14–18	1,800–2,400	2,000–2,500
Pregnant woman	2,000–2,400	2,200–2,400
Breastfeeding woman	2,200–2,500	2,400–2,700
Elderly (70+)	1,600–2,000	1,800–2,000

For a family of 4 adults, 72-hour supply = 72 hours × 4 × 2,000 = 576,000 calories minimum. This can be accommodated in approximately 4–6 kg of high-calorie-density foods.

What a 72-Hour Supply Looks Like

Scenario	Example Foods	Approx. Weight	Approx. Bulk
Minimal weight (go-bag)	Emergency ration bars (3,600 cal/bar) × 2	500–700g per person	Paperback book size
Practical go-bag	Ration bars + nuts + jerky + protein bars	1–1.5 kg per person	Shoe box
Home emergency kit	Canned goods + rice + beans + dried fruit	8–12 kg for 4 people	Standard backpack
Extended kit (1 week+)	Freeze-dried meals + staples + cans	15–25 kg for 4 people	Large suitcase

Calorie-Dense Shelf-Stable Foods Ranked

Higher calories per 100g = more energy per unit of weight and space.

Food	Calories per 100g	Shelf Life	Notes
Cooking oil (olive/coconut)	900	1–2 years	Highest calorie density of all foods
Nut butter (peanut, almond)	580–600	1–2 years	Also high protein; sealed jars last longer
Mixed nuts (dry roasted)	560–600	1–2 years	Excellent calorie and fat density
Jerky (beef, turkey)	300–400	1–2 years	High protein; lower fat
Emergency ration bars	400–450	5+ years	Purpose-built; no preparation needed
Instant oatmeal packets	360–380	2–3 years	Requires water and cooking
Dried fruit (raisins, apricots)	270–310	1–2 years	Energy; also micronutrients
Crackers / hardtack	400–450	2–5 years	Ready to eat
Granola bars	380–450	1–2 years	Easy morale food
Canned fish (tuna, sardines)	130–200	3–5 years	Lower calorie density but high protein
White rice (dry)	360	25+ years sealed	Requires water and fuel to cook
Dried beans / lentils	340–360	10–30 years sealed	Requires water and long cooking
Powdered whole milk	490	2–10 years	Also calcium and protein
Protein powder	370–400	2–3 years	Compact protein supplement

Foods Requiring Water — Avoid When Water Is Limited

Food	Water Required per Serving	Impact
Freeze-dried meals	200–400 ml	Substantial; each meal uses water
Instant noodles / ramen	400–500 ml	Uses significant water
Instant oatmeal	180–250 ml	Moderate
Dried beans	500 ml+ (+ cooking)	High; long soaking required
White rice	150–200 ml per 100g dry	Moderate
Powdered milk	200 ml per serving	Moderate

When water is severely limited: Focus on nut butters, jerky, crackers, canned fish, granola bars, and emergency ration bars — these provide calories without requiring water.

No-Cook Emergency Options

These foods can be consumed directly from packaging without cooking or heating:

Food	Servings Needed for 2,000 cal	Notes
Emergency ration bars	1–2 bars	Best compact option
Nut butter (2 tbsp per serving)	~10 servings	Can be eaten directly from jar
Trail mix / mixed nuts	~350g	Easy; high calorie density
Jerky	~500g	High protein; satiating
Crackers	~450g	Pair with nut butter or canned fish
Canned fish or beans (pull tab)	3–4 cans	No opener needed if pull tab
Granola bars	~10–12 bars	Convenient; morale food
Dried fruit	~700g	Energy but lower calorie density

Meal Schedule — 72-Hour Rationing

A structured schedule preserves morale and prevents over-eating in the first 24 hours.

Time	Meal	Approx. Calories
Morning	Granola bars + dried fruit + water	500–600
Midday	Nut butter + crackers + jerky	600–700
Afternoon snack	Trail mix or protein bar	200–300
Evening	Main meal (canned goods if cooking available, ration bar if not)	600–700
Total		~2,000

Calorie restriction if supplies are limited: An adult can function adequately on 1,200–1,500 calories per day for 72 hours without significant physical impairment — uncomfortable but manageable. Below 1,000 calories per day, cognitive function begins to be affected.

Morale Foods

Under stress, familiar and comforting foods provide a psychological benefit disproportionate to their caloric contribution. Include small amounts of:

• Chocolate
• Hard candy or chewing gum
• Instant coffee or tea packets
• Comfort biscuits or cookies (individual serving packs)
• Instant flavouring packets (bouillon, drink mixes)

These are not wasted weight — morale is a genuine survival factor.

Special Dietary Requirements

Requirement	Emergency Alternatives
Gluten-free	Rice cakes, canned legumes, jerky, nuts, freeze-dried GF meals
Vegetarian	Canned beans, nut butters, freeze-dried veg meals, nuts, dried fruit
Vegan	All of the above; check labels on ration bars (some contain dairy)
Infant (< 1 year, formula-fed)	Powdered formula is essential; include 72-hr supply; requires water
Infant (breastfeeding)	Ensure breastfeeding parent is adequately hydrated and fed
Diabetic	Focus on lower glycaemic options; nuts, jerky, crackers over candy/fruit-heavy options; include testing supplies
Allergy (nut)	Substitute jerky, crackers with hummus, seeds, canned fish; carefully check ration bar labels
Elderly with chewing difficulty	Canned fruit/veg, nut butters, instant oatmeal, soups
Renal diet (kidney disease)	Requires specialist planning; pre-position with medical team

Quick Reference

Situation	Action
Building a 72-hr kit for 1 adult	Target 6,000 calories; 1.5–2 kg of mixed calorie-dense foods
Water is very limited	No-cook, no-water foods only: ration bars, nut butter, jerky, crackers, nuts
Running low on food at 48 hours	Reduce to 1,200–1,500 cal/day; cut snacks; prioritise physical workers
Children not eating emergency food	Include familiar foods; morale items; child's usual snacks in emergency kit
First 24 hours — ration or eat normally?	Eat normally day 1 if supply appears adequate; start rationing day 2 if supply uncertain
Diabetic family member	Their dietary management is complex; stock extra of their specific safe foods and testing supplies
Toddler requiring formula	Store at least 72 hours of formula + sufficient clean water for preparation
Extended emergency beyond 72 hours	Transition to home food storage supplies; prioritise highest-calorie items first