Model railway scale calculator
Convert between the real world and the layout.
In the real world
2.2
from 1 cm at 1:220
At 1:220 (Z), standard gauge (1435 mm) scales to 6.52 mm, against the 6.5 mm track the scale is sold on. Metre gauge works out at 4.55 mm, the reason Swiss narrow gauge at this scale runs on 4.5 mm (Zm) track.