VanPowerCalc – Calculate van battery, solar, and wiring requirements quickly

Summary: VanPowerCalc provides instant calculations for battery capacity, solar panel wattage, wire gauge, and fuse ratings based on user-input appliances and battery type. It consolidates multiple electrical sizing tasks into one free, ad-free tool without signup.

What it does

Users enter their appliances and battery type to receive immediate sizing recommendations for batteries, solar panels, wiring, and fuses tailored to 12V van electrical systems.

Who it's for

Vanlifers, overlanders, and anyone building or upgrading a 12V electrical system in a van or similar vehicle.

Why it matters

It eliminates guesswork and the need for multiple calculators by providing comprehensive electrical sizing in one free tool.