Emergency water storage
Estimate your household’s needs, compare them with your existing supplies and plan any additional containers.
AvailableCalculate my supplies →
Preparedness tools
Practical guidance. Preparedness that fits your needs.
PrépaCivile calculators help you move from good intentions to a realistic plan, adapted to your home.
Explore the tools ↓No account requiredWater calculations run in your browserClear assumptions and sources
Before calculating · Your starting point
Review my preparedness.
A self-assessment separate from the calculators: twelve areas, an essential path with 24 questions, and three next actions based on your answers.
Start the self-assessment →PrépaCivile Toolbox
Choose your next step.
Each tool answers a practical question and produces a result you can use. Calculate water, household food and dog food supplies, rainwater collection, daily calorie needs, evacuation bag weight and generator power requirements. Other calculators will be added progressively.
Food storage
Build food supplies gradually around your household’s usual eating habits.
AvailablePlan my supplies →Daily calorie needs
Estimate your calorie needs, compare activity levels and prepare your menus.
AvailableEstimate my needs →Rainwater harvesting
Estimate the recoverable volume depending on your roof and precipitation.
AvailableEstimate my recovery →Generator power requirements
Compare operational and start-up requirements with customizable devices and values.
AvailableEstimate my power →Dog food storage
Calculate the food to be expected, deduct your stock and prepare the formats to buy.
AvailablePrepare your reserve →Evacuation bag weight
Compose your inventory, adjust the weights and divide the load between the bag, the items carried and the vehicle.
AvailablePrepare my bag →Inventory of reserves
Follow the available quantities and arrange their rotation.
ForthcomingIn preparation — no calculation availableUnderstand, calculate, then act.
Each calculator presents its assumptions, its sources and the limits of the result. You keep control of the parameters, without turning an estimate into a guarantee of autonomy.
- Describe your situation.
- Compare the estimated need to what you already have.
- Choose a next feasible action.
The official recommendations may vary depending on the territory and the situation. Follow the instructions of your local authorities as a matter of priority.