# VanPowerCalc

> Easily size your solar setup, batteries, and 12V wiring for your campervan.

- **Website**: https://vanpowercalc.com/
- **Uneed Page**: https://www.uneed.best/tool/vanpowercalc
- **Pricing**: Free
- **Category**: Personal Life
- **Tags**: Traveling, Lifestyle, Productivity
- **Submitted by**: @vanpowercalc
- **Launch Date**: 2026-07-02
- **Social Links**: [Twitter](https://x.com/vanpowercalc)

## About

Build your off-grid electrical system with confidence! 🚐⚡

Planning the electrical setup for a campervan, RV, or boat is usually overwhelming. It means juggling complex spreadsheets, confusing formulas, and worrying about safety hazards like undersized wires.

VanPowerCalc is a free, completely offline-capable Progressive Web App (PWA) designed to simplify electrical planning for nomads and DIY builders.

✨ Key Features:

- 🔋 Battery Sizing: Calculate exactly how much battery capacity you need based on your daily appliance usage.

- ☀️ Solar Panel Sizing: Find out how many solar panels you need to keep your setup running off-grid indefinitely.

- 🔌 Cable Sizing: Safely determine the required wire gauge (mm² / AWG) and fuse sizes for your 12V appliances to prevent voltage drops or fire risks.

- 📶 Offline First: Works perfectly as an app on your phone, even when you're parked in the middle of nowhere without a signal.

- 🌍 Fully Free & Ad-Free: Built by a vanlifer, for the community.

Stop guessing and start building your mobile home safely. Try VanPowerCalc today!