Solar & Battery Sizing
Estimate your off-grid solar and battery requirements.
SBMC-Hub Tool Collection
Practical tools for real self-build projects
Created around the questions, challenges and ideas that come from building and converting motorhomes.
From electrical and heating calculations to payload planning and furniture design, each tool has grown from real self-build experience and practical community ideas.
The SBMC-Hub Tool Shed
Featured Tools
A growing collection of practical calculators, planners and design tools created around real self-build projects.
Battery SOC Tracker
Log and track battery state of charge and diagnostic information.
DC Cable Calculator
Calculate cable size and voltage drop for DC installations.
DC-DC Charging
Estimate alternator charging performance and requirements.
Weight & Payload Manager
Work out payload and weight implications for a safer build.
Inverter & Surge Analyzer
Assess inverter loads and startup surge requirements.
Heating Fuel Estimator
Estimate heating fuel use and 12V power requirements.
LPG Gas Consumption
Estimate LPG consumption and expected autonomy.
Dew Point & Condensation
Check insulation and condensation risk from cabin conditions.
Weight Distribution
Estimate weight distribution and centre of gravity.
Water & Payload Manager
Work out water autonomy and payload implications.
Van Leveling Assistant
Use your device sensors to help level your van.
Parametric Furniture Builder
Design cabinets, beds, lockers and other van furniture.
Sheet Cut List Optimizer
Create and optimise sheet material cutting lists.
3D Van Planner & Cut List
Plan a van layout and generate project cut lists.
Complete 3D Van & Furniture Studio
Explore an integrated 3D van and furniture planning environment.
Built from real experience
The best ideas often start with a question from someone in the community. As new challenges arise, the collection of practical tools can grow with them.
Visit the Community