Calorie, Water, & Fuel Calculator

Prepper Resource Calculator

Estimate daily survival needs for your household — including calories, water, electricity, and fuel. Built for serious preppers and cautious planners.

Daily Caloric Needs

Water Consumption

Drinking Water per Person (WHO: 3.1L/day)

Handwashing (0.5L x times/day)

Quick Showers or Toilet Use (10L x times/day)

Energy Usage

Fridge (150W, avg use in hrs/day)

Lighting (60W, total hours/day)

Air Conditioner (1200W, hours/day)

EV Charger (7000W, hours/day)

Tools / Appliances (1000W, hours/day)

Fuel Consumption (Generator)

Generator Type

Total Power Demand (calculated)

Enter data to estimate calorie needs.

Enter data to estimate water usage.

Enter data to estimate power consumption.

Enter data to estimate generator fuel usage.