Preparedness Management Ledger | Disaster Prevention Stockpile Checker

This is a tool that automatically calculates recommended stockpile amounts for water, food, batteries, and other essentials by inputting the number of household members and stockpile days (3 days/7 days). It allows you to check your achievement rate and "preparedness level" at a glance based on your current holdings and expiration dates. It also includes a fixed checklist for emergency evacuation bags, making it easier to maintain disaster preparedness stockpiles even for those living alone.