Emergency Preparedness Calculators
Free emergency preparedness calculators: water storage per person, food supply duration, generator fuel runtime, and disaster readiness.
Iodine Water Purification Calculator
Calculate iodine drops needed per liter to purify drinking water. Adjusts for water clarity and temperature with required contact time for disinfection.
Portable Power Station Sizing Calculator
Size a Jackery, EcoFlow, or Bluetti power station from your essential outage loads. Get watt-hours needed, recharge time, and solar panel pairing.
Bug-Out Bag Weight Calculator
Calculate ideal bug-out bag weight by body weight, fitness level, and trip duration. Get a target pack weight that you can carry for 72 hours without injury.
Survival Calorie Needs Calculator
Calculate daily survival calorie needs by activity level, climate, and body weight. Plan emergency food storage caloric targets for cold or hot environments.
Emergency Food Storage Calculator
Calculate how much emergency food to store for your household. Covers calories, water, and key staples for 72-hour to 1-year preparedness planning.
Emergency Shelter Heating Calculator
Estimate propane, kerosene, or firewood needed to heat an emergency shelter. Enter room size, insulation, and duration to plan your fuel supply.
Emergency Food Stockpile Calculator
Calculate how much food to stockpile for an emergency. Based on calorie needs per person per day, with recommendations for long-shelf-life staples.
Emergency Water Storage Calculator
Calculate how much water to store for an emergency. Based on the recommended minimum of 4 litres per person per day for drinking and basic sanitation.
Generator Fuel Calculator
Calculate how long your generator will run on a full tank, or how much fuel you need to store for a given number of days. Based on generator wattage and load.