RV Water Tank Calculator

Managing water supply is one of the most critical aspects of RV camping, especially when boondocking or staying at sites without hookups. Your RV's fresh water tank is your lifeline for drinking, cooking, cleaning dishes, and personal hygiene. Understanding how long your water will last helps you plan refill stops and avoid running dry in remote locations. Water consumption in an RV varies significantly based on your habits and conservation practices. The average RVer uses about 20-25 gallons per person per day, but this can be reduced to 10-15 gallons with careful conservation. This calculator uses a standard baseline of 20 liters per person per day, which accounts for essential needs including drinking, cooking, and basic hygiene.