Western Reserve Division 5 MCR of NMRA
Scale Speed Calculator

  1. Select your Scale in the first column
  2. Select distance loco has traveled in second column
  3. Enter number of seconds you have timed and click button below
ScaleDistance to travelTime to travel this distance in seconds:
Z (1:220) 2 inches
N (1:160) 4 inches
TT (1:120) 6 inches
HO (1:87) 12 inchesResults
 inches/second
 scale mph
 scale km/h
S (1:64) 24 inches
O (1:48) 36 inches
G (1:22.5) 48 inches
other (1:)