Project GVM Weight Calculator Check your 4WDs weight, axle loads and towing capacity

Use the free GVM calculator to see how each modification affects your total vehicle weight and axle loading in real time.

Built by an enthusiast, for the 4WD community

"I built this to solve the GVM headaches on my own 200 Series. As an engineer, I knew there had to be a better way than spreadsheets. This free, visual tool is designed to help you plan your rig, avoid mistakes, and hit the tracks with confidence."

Latest Blog Articles

4WD towing safely with proper weight distribution

Towing Safely: Tips & Tricks

Learn safe towing techniques, legal limits, and common mistakes.

Understanding GVM & GCM

A clear explanation of vehicle weight ratings and compliance.

Top 3 Accessories for Touring

What actually adds value without blowing your payload.