Weight & towing
Know where the kilograms go.
Build compliance planner
Check available payload, axle, GVM, GCM, roof and towing figures together, with missing information shown.
Check the whole build →Free trip toolTrip payload planner
Pack a specific trip item by item—passengers, water, fuel, food, recovery and camping gear.
Plan the trip load →Complete checkAxle, GVM, GCM & towing
Check measured axle loads, trailer mass and the full combination.
Check the combination →Vehicle buildVehicle build payload calculator
Model permanent accessories and modifications against the vehicle's payload limit.
Check build payload →AxlesLoad distribution planner
Estimate how cargo position transfers weight between the axles.
Place major loads →Tyres & terrain
Fitment, pressure and reinflation.
Tyre-size change calculator
Compare diameter, clearance, speedometer and gearing changes.
Compare sizes →Off roadTerrain tyre-pressure guide
Find a conservative front/rear starting range for the terrain and axle load.
Plan pressures →ReinflationTyre reinflation calculator
Estimate free-air volume and compressor run time.
Estimate inflation time →RecoveryRecovery resistance estimator
Explore a broad resistance range without treating it as a rigging plan.
Estimate resistance →Camping & touring
Fuel, water, food and energy.
Fuel-range planner
Plan consumption, conditions and a configurable reserve.
Plan fuel range →WaterCamping water planner
Plan daily use, emergency reserve, containers and payload weight.
Plan water →FridgeFridge runtime planner
Explore heat, openings, battery capacity and solar input.
Estimate fridge runtime →Quick powerBattery & solar calculator
Balance common appliances against usable battery energy and solar.
Check stationary power →Multi-day powerCamp power planner
Add appliance demand, cloudy weather and alternator charging.
Build an energy budget →Vehicle setup & trail safety
Geometry, roof systems, suspension and crossings.
Roof-load calculator
Check dynamic and static limits with equipment and occupants.
Check roof loads →SuspensionSuspension load worksheet
Total permanent front and rear accessory loads.
Build the worksheet →GeometryClearance-angle calculator
Estimate approach, departure and ramp-over angles.
Check the angles →CrossingsWater-crossing checklist
Screen depth, flow and bottom risks before deciding to proceed.
Assess the crossing →