Build Your Perfect 12V Electrical SystemWithout the Guesswork
Welcome r/vandwellers, r/skoolies, and r/boatbuilding community!
VoltPlan makes electrical planning for your van, boat, or off-grid setup simple and fun.
No account needed • Free for personal use • Export your design anytime
Built by DIYers, for DIYers
We know you've been drawing electrical diagrams on napkins and whiteboards. VoltPlan brings that simplicity to your browser, with the power calculations you need.
r/vandwellers Template
200Ah lithium, 400W solar
r/boatbuilding Template
Dual battery, shore power
r/skoolies Template
600W solar, 400Ah battery bank
Building in Public with Reddit
Wire Gauge Calculator
Calculate proper wire sizes for your runs
PDF Export
Print your diagrams for the build
More Components
Victron, Renogy, Battle Born, and more
Power Calculator
Automatic load calculations
Got ideas?
Email us at feedback@voltplan.com
Join our Discord
Chat with other beta testers discord.gg/evemrYpHZt
Create Your VoltPlan Account
Create your account to save diagrams and access advanced features.
Special thanks to the communities at r/vandwellers, r/skoolies, r/boatbuilding, r/SolarDIY, and r/GoRVing for your support and enthusiasm!