Calculators
The parts of off-grid camping that are arithmetic, not opinion. No signup, live as you type, and nothing you enter leaves your browser. More are coming; the ones that are not built yet are listed below so you know what is missing.
RV Solar Calculator
Daily watt-hours, your real sun hours, and panel size in. Panels and battery amp-hours out, with the working shown.
Open calculator →Generator Sizing
Tick what you run. The startup surge on the biggest motor decides your wattage class, not the running total.
Open calculator →Battery bank sizing
Usable amp-hours by chemistry, temperature, and how many days you want without sun.
Coming soonTrip fuel cost
Route miles and your real mpg against current fuel prices.
Coming soonTank duration
How many days of fresh water and tank capacity you actually have at your usage.
Coming soonTowing check
Payload, tongue weight, and GCWR against what you are actually hauling.
Coming soonThese are planning estimates built from the numbers you enter plus stated assumptions, not a system design. For anything involving electrical work, propane, or generator exhaust, get a qualified installer to check it. Bad power decisions burn things down and bad exhaust decisions kill people.