Water Tank Sizing Calculator
Enter how many people, how many days between refills, and your usage style to get a recommended fresh water tank size — plus the weight you’ll be carrying when it’s full.
Recommended Tank Size
35 gal
Weight When Full
291 lbs
Water weighs 8.3 lbs/gallon — factor this into your payload calculations alongside your electrical and cabinetry weight.
Like the water tank calculator? It's one tab out of nine.
The full Van Build Tracker links your electrical, budget, weight, and shopping-list sheets together — so changing one number updates your whole build automatically. This calculator alone can't do that.
See the Full Spreadsheet — $39