Free RV Tool
RV Water Usage Calculator
Enter travelers, camping days and daily water use to estimate your RV fresh water tank needs.
Gallons per person per day
Total gallons per day
Gallons per person per day
Gallons per person per day
Cleaning, pets or outdoor use per day
About RV Water Usage Calculator
This RV Water Usage Calculator helps campers, RV owners and boondockers estimate how much fresh water they need for a trip. It includes drinking water, shower water, toilet flush water, cooking, dishwashing and extra cleaning water.
How Much Water Do You Need for RV Camping?
Your RV water requirement depends on the number of travelers, camping duration, shower habits, cooking needs and toilet usage. For safe planning, always keep 10% to 20% extra water in your fresh water tank.