Build your camper, we do the math
Free calculators for your camper van conversion or RV build. Calculate cables, batteries, solar panels, weight and more. Supports metric (mm²) and AWG.
What can you calculate?
Electrical Planner
Plan your complete electrical installation with automatic calculations for cables, fuses, battery and more.
Open tool→Cable calculator
Calculate the minimum cable size based on voltage, current, length and allowed voltage drop.
Open tool→Van Advisor
Find out which van suits you best based on your needs and situation.
Open tool→Floor Plan Designer
Design your campervan interior layout with an interactive 2D floor plan. Drag and drop furniture onto a scale model of your van.
Open tool→R-value & heat loss calculator
Calculate R-values and total heat loss for your camper insulation build-up.
Open tool→Heating Calculator
Calculate how much heating power you need and which fuel tank or gas bottle fits your camper van.
Open tool→Read our guides
Voltage Drop Calculation for Camper Vans
How do you calculate voltage drop in a 12V or 24V camper? Formula, rules of thumb per circuit and concrete worked examples.
Read guide→12V, 24V or 48V: which system voltage?
Compare 12V, 24V and 48V systems. Learn when to switch to a higher voltage and weigh the pros and cons.
Read guide→Camper van layout: tips for the perfect floor plan
Practical tips for your camper van layout. Learn how to make the most of your available space.
Read guide→Stay in the loop
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