Van conversion without weight guesswork.

Plan your layout in 2D and get instant analysis of axle loads, center of gravity, and tilt risk. Your technical edge for inspection approval.

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Avoid the Camper Disaster

"You spent months building, lovingly varnishing every board. Then you're at the inspection. The scales say: 3,650 kg. Too heavy. The front axle? Overloaded because the big batteries and water tank were placed wrong. The handling in curves is spongy and dangerous. All for nothing? Not with VanLogic. We built this app so you know what the final result on the scales will look like with your very first click."

Read our blog. What's important for van conversions? What are the dangers? How can you avoid them?

Calculating Sprinter conversion weight: What you need to know before turning the first screw

Reading time: approx. 6 minutes

Most campervan builders make the same mistake: they start building without knowing how heavy their van will eventually be. Months later they're at the inspection — and the scale shows a number they didn't expect. This article shows you how to keep weight under control from the start. Not after the build. Before.

Read full article

Van Conversion and Technical Inspection: What You Need to Know

Reading time: approx. 6 minutes

For many self-builders, the vehicle inspection is the most nerve-wracking part of the whole project. Not because it's so difficult — but because most people don't know exactly what gets checked. And a failed inspection is expensive: modifications, a second appointment, lost time. This article explains what is actually checked at the inspection, what role weight plays in that process — and how to prepare so you pass first time.

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Centre of Gravity in a Campervan: Why Your Van Sways in Corners — and What to Do About It

Reading time: approx. 5 minutes

Anyone who drives their fully converted van on the motorway for the first time sometimes gets an unpleasant surprise: the van feels different than before. Slower to respond in corners, more sensitive to crosswinds, a slight sway during quick lane changes. This is not imagination. It's physics. The centre of gravity of your vehicle has changed — and that directly affects how the van behaves on the road.

Read full article

VanLogic Physics Lab

Use the real app logic directly in your browser with our web app

Real calculation, no fake.

What you see on the left (this is not an image) is the **real VanLogic engine**. We use the same code as in the mobile app with the same features. Test it now! You can try everything here!

  • Real-time axle load calculation
  • Dynamic center of gravity analysis
  • Original VanLogic algorithms
Unlock full range of functions

Your web project is currently only saved locally. For permanent access, get the mobile app.

Physics & Safety

"Solve the most dangerous problem first."

Warnings for high center of gravity (CoG) or critical side tilt risk.

Physik

2D Editor

"It's child's play to use."

Easy drag & drop moving with instant impact on all loads.

Editor

Materials

"We are precise down to the detail."

Weight calculation based on material density (kg/m³) and individual dimensions.

Material

Unit Switch

"We can go global & technical."

Seamless switching between metric (mm/kg) and imperial (in/lbs) systems.

Switch

Result & Payload

"Your goal: A legal, safe van."

Monitor the total limit and axle load distribution in real-time during loading.

Result

Inspection / Report

"Facts that convince every inspector."

Generate a PDF with all technical data and tank scenarios at the touch of a button.

PDF

Fair Testing.

Free

0€
  • Accurate basic 2D floor planning
  • Vehicle database of all common types (Ducato, Sprinter, Crafter, Transit, T5/T6…) - Templates with real dimensions
  • Vehicle structures like wheel wells, roof tapers, sliding doors with collision alerts
  • Instant weight & axle load calculation
  • Instant center of gravity / tipping risk
  • Warning messages for axle loads & limits
  • Limited material/component selection
  • Limited DIY construction methods
  • No internet connection required, plan everything offline
Recommended for builders

Pro

Subscription (3 days free trial with all extras) or one-time Lifetime use
  • Full material and component database
  • Physics analysis: Center of gravity & tipping values
  • Custom materials/components & categories with own weight/density data
  • Object duplication
  • For DIY: all types of construction methods, such as slanted boxes, frames...
  • For DIY: material thickness, shelves, components selectable (affects weight)
  • Export/Import of your projects - unlimited projects
  • Technical inspection limits & warnings
  • Manual dimensions (mm/inch)
  • PDF Export & material list
  • Legal payload check
  • Tank simulation: Full vs. Empty

Download now for your smartphone/tablet

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Support & Feedback

We are constantly improving the app and rely on your feedback to do so. Write to us!

Note If you need help with the app: Leaving a review without contacting us first when an issue occurs is not helpful for further development.
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