Build the campervan of your dreams
with our free calculators
Where should you start your conversion?
Don't get lost in the details.
Explore our 4 essential guides to design, budget and build the campervan of your dreams, step by step.
Electricity & Energy
Understand 12V systems, size your battery bank (Lithium vs AGM), calculate your solar panel requirements, and keep your wiring safe.
DVLA & Layout
Pass your DVLA reclassification smoothly. Master fixed ventilation (BS EN 721), insulation choices, and weight distribution (GVW).
Plumbing & Heating
Design your water system, install your gas system to the relevant standards, and choose the right power output for your diesel heater.
Budget & Financing
Discover the true cost of a van conversion from start to finish. Plan your expenses and finance your project without any surprises.
β‘ Electrical Calculators
π
Energy Consumption Calculator
Calculate your daily energy needs in watt-hours (fridge, laptop, lights).
π
Cable Size Calculator
Determine the correct cable size (mmΒ²) to prevent overheating and reduce the risk of fire.
βοΈ
MPPT Solar Charge Controller
Choose the right MPPT charge controller based on your solar panels.
β‘
Battery Charging Time Simulator
Calculate exactly how long it will take to recharge your campervan battery.
π₯
Battery Comparison
Should you choose a Lithium or AGM battery for your campervan?
βοΈ
230V Inverter Calculator
Size your 12/24V to 230V inverter for your campervan.
π οΈ Structure & Budget Calculators
π°
Budget Simulator
Calculate the total cost of your conversion project and manage your finances.
ποΈ
Vehicle Weight Calculator
Calculate your vehicle's total weight and make the right choices.
πͺ
Materials Calculator β
Insulation & Wood
Calculate the exact surface area of your van and get an accurate shopping list for insulation and panelling.
π₯ Plumbing & Comfort Calculators
π§
Campervan Water Needs Simulator
Calculate your water consumption and size your water tanks accordingly.
π₯
Campervan Heating Power Calculator
Calculate the exact heating power you need based on your van's volume, insulation and destinations.
π
Gas Consumption Calculator
Accurately estimate how long your gas bottle will last in your campervan.
π DVLA Classification & Safety Calculators
ποΈ
Campervan Fixed Ventilation Calculator (BS EN 721)
Calculate required high and low permanent ventilation areas to comply with BS EN 721 standards
βοΈ
Weight Distribution Calculator (GVW)
Calculate axle load distributions and total payload to ensure legal GVW compliance
π Latest Articles
Preventing Hotspotting in Series-Connected Solar Arrays: Managing Partial Shading on Flexible Monocrystalline Panels
Preventing Hotspotting in Series-Connected Solar Arrays: Managing Partial...
How to Correctly Install a 12V Diaphragm Water Pump to Prevent Backflow and Pressure Cycling Issues
How to Correctly Install a 12V Diaphragm Water Pump to Prevent Backflow and...
Essential Diesel Heater Installation Tips: Fuel Line Routing and Exhaust Shielding for MOT Compliance
Essential Diesel Heater Installation Tips: Fuel Line Routing and Exhaust...