Vanlifemag.de has launched an online tool that calculates the total height of a camper van including roof tents, roof boxes or air conditioning units. The service compares the result with height limits at car parks, car washes, underpasses, ferries and toll roads. The base height is taken from field 20 of the vehicle registration document in millimetres, but does not include aftermarket equipment. The tool adds the highest roof-mounted item to the documented height rather than summing all accessories. Vehicle height data comes from the ADAC catalogue and is rounded up to the nearest centimetre. The calculation does not replace measuring the vehicle or checking signs on site.