Off-Grid Power Calculator for Campers, Boats and Tiny Homes
Want to know how many batteries and solar panels you need for your camper, boat, or off-grid setup? This easy-to-use calculator helps you estimate your energy needs — whether you’re using 12V or 230V devices. You’ll find out:
How much battery capacity you need (AGM or lithium)
How long you can stay off-grid based on your usage and number of days
How many solar panels are needed to recharge your daily consumption
And how large your inverter should be to power your appliances safely
Perfect for planning your electrical system — whether you’re aiming for a basic weekend setup or full off-grid independence.
Ready to build your system?
Once you know your daily power needs, it’s time to turn numbers into a real-world setup. With our Software, you can design your own wiring diagram, including fuse size calculator, correct cable sizes, and inverter connections.
No more guesswork — just a clear, safe layout tailored to your setup.