Spaziou · Your camper tools hub
Plan better.
Travel with a reserve.
Calculate what you need, plan your installation and prepare your trip. Free tools and practical explanations help turn questions into decisions. Some linked guides and tools are currently available only in Spanish.
Browse tools ↓Understand the systems in the Atlas ↗
Choose what you want to solve
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Try a broader term such as “solar”, “water” or “weight”, or clear the search to return to the catalogue.
01 · Energy and electricity
Size your system before buying.
Consumption, battery, solar, wiring, inverter and fridge in one calculation workflow.
9 toolsEnergy consumption
Select appliances and operating hours to estimate Wh/day and runtime.
Open calculator →Energy · PlanningCamper electrical planner
Bring battery, solar, charging while driving, inverter, fuses and wiring together in a bill of materials.
Plan the system →BatteryRequired battery capacity
Convert consumption into Wh and Ah using days without recharging and depth of discharge.
Calculate battery →SolarSolar panels
Estimate solar power from daily consumption, peak sun hours and losses.
Calculate panels →12 VCable cross-section
Calculate voltage-drop cable size, the next standard size, voltage loss and power loss.
Calculate cable →230 V / ProtectionInverter and fuse
Estimate continuous power and DC current, then check cable and fuse against the conductor requirements and equipment manual.
Calculate inverter →BatteryBattery runtime
Estimate days of runtime from Ah, voltage, depth of discharge and consumption.
Calculate runtime →RefrigeratorRefrigerator consumption
Estimate Wh/day and Ah/day using power, duty cycle, temperature and reserve.
Calculate refrigerator →SolarSolar by season
Compare winter, spring/autumn and summer scenarios using adjustable peak sun hours.
Calculate scenario →02 · Water and comfort
Calculate supplies and runtime.
Fresh water, grey water, gas and heating based on travellers, days and usage conditions.
7 toolsCamper water planner
Compare basic, pressurised and full systems. Calculate litres, flow, fuses and pipework, then generate a bill of materials.
Plan and create list →WaterWater supply duration
Calculate litres from people, travel days and a safety reserve.
Calculate water →GasGas supply duration
Estimate how many days your gas supply lasts from daily consumption and a reserve.
Calculate gas →Comfort · PlanningThermal comfort planner
Combine insulation, ventilation, heating and air conditioning in a bill of materials.
Plan comfort →ComfortHeating
Estimate heating power from interior volume, insulation and temperatures.
Calculate heating →WaterGrey water
Check how many days it takes to fill the tank and how much weight you carry.
Calculate tank capacity →InsulationMeters of Kaiflex / ArmaFlex
Estimate m² for L2H2, L3H2 or manual dimensions, subtract openings and allow for cutting waste and ribs.
Calculate insulation →03 · Project and trip
Go from idea to plan.
Weight, budget, layout, build options and travel costs to plan with a reserve.
6 toolsBuild configuration comparison
Compare two builds by cost, weight, water, battery, solar and space before buying.
Compare options →WeightPayload
Add passengers, water, batteries, luggage and accessories and compare against the vehicle's maximum authorised mass.
Check weight →TravelTrip planner
Combine distance, fuel, overnight stays, water and energy in one route summary.
Plan trip →TravelTravel cost
Add fuel, tolls, overnight stays, ferries and extras to plan your budget.
Calculate trip →ProjectCamper conversion budget
Add materials, installations, applicable vehicle-approval costs and a realistic contingency reserve.
Calculate budget →Layout2D and 3D layout planner
Plan to scale, position modules, check clashes and prepare parts, cutting and budget lists.
Open designer →04 · Vehicles and caravans
Check the base vehicle before fitting it out.
Measurements, models and towing limits to start with the correct vehicle.
4 toolsWhich caravan can my car tow?
Compare maximum authorised mass (Spanish MMA), towing limit (MMR) and Spanish B/B96/B+E licence rules. This tool uses the Spanish framework; check the rules for your country.
Check car and caravan →CaravansCaravan selector
Filter by towing limit, travellers, beds, budget, season and intended use.
Find models to compare →LayoutInterior space and volume
Convert your model's interior dimensions into approximate floor area, volume and clear space.
Calculate space →ModelsVan model guides
After calculating, check how each solution fits Ducato, Trafic, California, Vivaro and other models.
Explore models →Starting from scratch or need help with your project?
Is something not working?
Work through battery/12 V, solar or water symptoms, distinguishing safe checks from situations that need a professional.
Open diagnostics →A section for making decisions
From consumption to actual assembly.
Spaziou calculators are a starting point. They do not replace vehicle approval, professional electrical design or manufacturer specifications, but help turn questions into comparable figures.
How to use them
Estimate first. Compare next. Verify before deciding.
Enter your data
Use actual consumption, weights and distances whenever you know them.
Plan with a reserve
Do not design right at battery, payload or voltage-drop limits.
Check before buying
Check datasheets, compatibility, applicable rules and vehicle-approval requirements.
Spaziou Visual
Understand the system before calculating it.
Explore our camper diagrams and infographics ↗ to understand how battery, solar, water, heating, ventilation and layout work together.
Explore the camper Atlas ↗After calculating
From the result to a useful comparison.
Start with your data, then check specifications, format and compatibility in our main comparisons.
LiFePO₄ batteries
Compare 100 and 200 Ah batteries after calculating the capacity you need.
Compare batteries →SolarSolar panels
Check panel formats and watt ratings after estimating your power needs.
Compare panels →Portable PowerPower stations
Match Wh capacity, output power and recharging to specific models.
Compare power stations →CoolingCamper refrigerators
After calculating consumption, compare storage capacity and power supply.
Compare refrigerators →