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Leo VanPowerCalcleft a comment
Hey everyone! I built VanPowerCalc because when I was planning my van build, I spent hours in spreadsheets trying to figure out the right battery size, how many solar panels I needed, and what wire gauge to use. Every calculator I found was either behind a paywall, full of ads, or only did one calculation at a time. So I built a free tool that does everything in one place — battery, solar, and...
VanPowerCalcSize your van battery, solar & wiring in 60 seconds — free
Building a van and tired of guessing wire sizes, battery capacity, or how many solar panels you need? VanPowerCalc does the math for you.
Enter your appliances, pick your battery type, and get instant results: battery size, solar wattage, wire gauge, and fuse ratings. No signup, no ads, 100% free.
Built for vanlifers, overlanders, and anyone doing a 12V electrical build.
VanPowerCalcSize your van battery, solar & wiring in 60 seconds — free