Inverter Calculator | Sizing AC Load in an Electrical System

This inverter calculator will help you correctly size your inverter for the daily load of your AC appliances in your camper.

It’s simple and straightforward to use. We’ve included a section on the site to answer some questions you may have.

This calculator forms part of our camper solar setup series and the wider subject of campervan electrics. 

Get this right for your camper lifestyle and you can complete your DIY campervan conversion with confidence.

How do I use this inverter calculator? 1. Enter every electrical AC device and component you’ll use in your camper 2. Enter the watts each device uses 3. That’s it.

Do I need an inverter? No! If you only use DC appliances, you don’t need an inverter. You only need an inverter if you want to use AC appliances powered by your deep cycle battery.

Can I avoid needing an inverter altogether? We have an article coming soon all about inverters for RVs and this explains how to avoid the need for an inverter altogether.

From How do I know if my appliance is AC or DC to There is a health warning on my results, we have all these tips lined up for you! Swipe up!